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28025496 = 23322691447
BaseRepresentation
bin110101011101…
…0001010011000
31221201211202100
41222322022120
524133303441
62440403400
7460132662
oct152721230
957654670
1028025496
1114901a74
129476560
135a63345
143a17532
1526d8cb6
hex1aba298

28025496 has 48 divisors (see below), whose sum is σ = 76237200. Its totient is φ = 9300672.

The previous prime is 28025483. The next prime is 28025507. The reversal of 28025496 is 69452082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28025496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18645 + ... + 20091.

It is an arithmetic number, because the mean of its divisors is an integer number (1588275).

Almost surely, 228025496 is an apocalyptic number.

It is an amenable number.

28025496 is an abundant number, since it is smaller than the sum of its proper divisors (48211704).

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

28025496 is a wasteful number, since it uses less digits than its factorization.

28025496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28025496 is about 5293.9112195049. The cubic root of 28025496 is about 303.7510369319.

The spelling of 28025496 in words is "twenty-eight million, twenty-five thousand, four hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 269 538 807 1076 1447 1614 2152 2421 2894 3228 4341 4842 5788 6456 8682 9684 11576 13023 17364 19368 26046 34728 52092 104184 389243 778486 1167729 1556972 2335458 3113944 3503187 4670916 7006374 9341832 14012748 28025496