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28466915470 = 257439457447
BaseRepresentation
bin11010100000110000…
…101010100010001110
32201110220112010202121
4122200300222202032
5431300012243340
621024424443154
72025302534440
oct324060524216
981426463677
1028466915470
1111088916a24
1256256194ba
1328b888aba6
1415409b2490
15b1924694a
hex6a0c2a88e

28466915470 has 32 divisors (see below), whose sum is σ = 59922390528. Its totient is φ = 9533105568.

The previous prime is 28466915459. The next prime is 28466915479. The reversal of 28466915470 is 7451966482.

It is a super-2 number, since 2×284669154702 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28466915479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4725714 + ... + 4731733.

It is an arithmetic number, because the mean of its divisors is an integer number (1872574704).

Almost surely, 228466915470 is an apocalyptic number.

28466915470 is an abundant number, since it is smaller than the sum of its proper divisors (31455475058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28466915470 is a wasteful number, since it uses less digits than its factorization.

28466915470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457504.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 28466915470 in words is "twenty-eight billion, four hundred sixty-six million, nine hundred fifteen thousand, four hundred seventy".

Divisors: 1 2 5 7 10 14 35 43 70 86 215 301 430 602 1505 3010 9457447 18914894 47287235 66202129 94574470 132404258 331010645 406670221 662021290 813340442 2033351105 2846691547 4066702210 5693383094 14233457735 28466915470