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28935816 = 23371313249
BaseRepresentation
bin110111001100…
…0011010001000
32000110002110220
41232120122020
524401421231
62512110040
7500643660
oct156303210
960402426
1028935816
11153739a8
129835320
135cc17b0
143bb31a0
152818896
hex1b98688

28935816 has 64 divisors (see below), whose sum is σ = 89040000. Its totient is φ = 7630848.

The previous prime is 28935799. The next prime is 28935839. The reversal of 28935816 is 61853982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4441 + ... + 8808.

It is an arithmetic number, because the mean of its divisors is an integer number (1391250).

Almost surely, 228935816 is an apocalyptic number.

28935816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28935816 is an abundant number, since it is smaller than the sum of its proper divisors (60104184).

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

28935816 is a wasteful number, since it uses less digits than its factorization.

28935816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278 (or 13274 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 28935816 is about 5379.2021713262. The cubic root of 28935816 is about 307.0048558545.

The spelling of 28935816 in words is "twenty-eight million, nine hundred thirty-five thousand, eight hundred sixteen".

Divisors: 1 2 3 4 6 7 8 12 13 14 21 24 26 28 39 42 52 56 78 84 91 104 156 168 182 273 312 364 546 728 1092 2184 13249 26498 39747 52996 79494 92743 105992 158988 172237 185486 278229 317976 344474 370972 516711 556458 688948 741944 1033422 1112916 1205659 1377896 2066844 2225832 2411318 3616977 4133688 4822636 7233954 9645272 14467908 28935816