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28441902 = 2367139509
BaseRepresentation
bin110110001111…
…1110100101110
31222111222221210
41230133310232
524240120102
62453335250
7463515666
oct154376456
958458853
1028441902
1115066905
129637526
135b7aa38
143ac51a6
15276c36c
hex1b1fd2e

28441902 has 32 divisors (see below), whose sum is σ = 58262400. Its totient is φ = 9253728.

The previous prime is 28441873. The next prime is 28441927. The reversal of 28441902 is 20914482.

It is a self number, because there is not a number n which added to its sum of digits gives 28441902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55624 + ... + 56132.

It is an arithmetic number, because the mean of its divisors is an integer number (1820700).

Almost surely, 228441902 is an apocalyptic number.

28441902 is an abundant number, since it is smaller than the sum of its proper divisors (29820498).

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

28441902 is a wasteful number, since it uses less digits than its factorization.

28441902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28441902 is about 5333.0949738402. The cubic root of 28441902 is about 305.2480361629.

The spelling of 28441902 in words is "twenty-eight million, four hundred forty-one thousand, nine hundred two".

Divisors: 1 2 3 6 67 134 139 201 278 402 417 509 834 1018 1527 3054 9313 18626 27939 34103 55878 68206 70751 102309 141502 204618 212253 424506 4740317 9480634 14220951 28441902