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28300045557 = 372411558947
BaseRepresentation
bin11010010110110100…
…000110110011110101
32201001021112021021110
4122112310012303311
5430424302424212
621000104105233
72021205263310
oct322664066365
981037467243
1028300045557
1111002702103
125599765219
1328901334b4
141526775977
15b09783a3c
hex696d06cf5

28300045557 has 16 divisors (see below), whose sum is σ = 43141842432. Its totient is φ = 16164718320.

The previous prime is 28300045547. The next prime is 28300045603. The reversal of 28300045557 is 75554000382.

It is not a de Polignac number, because 28300045557 - 27 = 28300045429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300045547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228843 + ... + 330104.

It is an arithmetic number, because the mean of its divisors is an integer number (2696365152).

Almost surely, 228300045557 is an apocalyptic number.

It is an amenable number.

28300045557 is a deficient number, since it is larger than the sum of its proper divisors (14841796875).

28300045557 is a wasteful number, since it uses less digits than its factorization.

28300045557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561368.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 28300045557 in words is "twenty-eight billion, three hundred million, forty-five thousand, five hundred fifty-seven".

Divisors: 1 3 7 21 2411 7233 16877 50631 558947 1676841 3912629 11737887 1347621217 4042863651 9433348519 28300045557