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28058048025 = 3527271191563
BaseRepresentation
bin11010001000011000…
…111101011000011001
32200102102011112001220
4122020120331120121
5424430330014100
620520101202253
72012206321200
oct321030753031
980372145056
1028058048025
1110999044847
125530700389
132851c633a7
141502580237
15ae33d0aa0
hex68863d619

28058048025 has 144 divisors (see below), whose sum is σ = 55107330048. Its totient is φ = 12557328000.

The previous prime is 28058048023. The next prime is 28058048093. The reversal of 28058048025 is 52084085082.

It is not a de Polignac number, because 28058048025 - 21 = 28058048023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28058048023) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 49836394 + ... + 49836956.

It is an arithmetic number, because the mean of its divisors is an integer number (382689792).

Almost surely, 228058048025 is an apocalyptic number.

28058048025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28058048025 is a deficient number, since it is larger than the sum of its proper divisors (27049282023).

28058048025 is a wasteful number, since it uses less digits than its factorization.

28058048025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The spelling of 28058048025 in words is "twenty-eight billion, fifty-eight million, forty-eight thousand, twenty-five".

Divisors: 1 3 5 7 15 21 25 35 49 71 75 105 147 175 191 213 245 355 497 525 563 573 735 955 1065 1225 1337 1491 1689 1775 2485 2815 2865 3479 3675 3941 4011 4775 5325 6685 7455 8445 9359 10437 11823 12425 13561 14075 14325 17395 19705 20055 27587 28077 33425 37275 39973 40683 42225 46795 52185 59115 67805 82761 86975 94927 98525 100275 107533 119919 137935 140385 199865 203415 233975 260925 279811 284781 295575 322599 339025 413805 474635 537665 599595 664489 689675 701925 752731 839433 999325 1017075 1399055 1423905 1612995 1958677 1993467 2069025 2258193 2373175 2688325 2997975 3322445 3763655 4197165 5269117 5876031 6995275 7119525 7634843 8064975 9793385 9967335 11290965 15807351 16612225 18818275 20985825 22904529 26345585 29380155 38174215 48966925 49836675 53443901 56454825 79036755 114522645 131727925 146900775 160331703 190871075 267219505 374107307 395183775 572613225 801658515 1122321921 1336097525 1870536535 4008292575 5611609605 9352682675 28058048025