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28035258 = 2312773659
BaseRepresentation
bin110101011110…
…0100010111010
31221202100010220
41222330202322
524134112013
62440520510
7460203306
oct152744272
957670126
1028035258
1114909339
129480136
135a67914
143a1ad06
1526dbb23
hex1abc8ba

28035258 has 16 divisors (see below), whose sum is σ = 56129760. Its totient is φ = 9335216.

The previous prime is 28035223. The next prime is 28035263. The reversal of 28035258 is 85253082.

It is a super-2 number, since 2×280352582 = 1571951382253128, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5833 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (3508110).

Almost surely, 228035258 is an apocalyptic number.

28035258 is an abundant number, since it is smaller than the sum of its proper divisors (28094502).

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

28035258 is a wasteful number, since it uses less digits than its factorization.

28035258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 28035258 is about 5294.8331418469. The cubic root of 28035258 is about 303.7863009334.

The spelling of 28035258 in words is "twenty-eight million, thirty-five thousand, two hundred fifty-eight".

Divisors: 1 2 3 6 1277 2554 3659 3831 7318 7662 10977 21954 4672543 9345086 14017629 28035258