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28385595 = 325797929
BaseRepresentation
bin110110001001…
…0000100111011
31222102010201100
41230102010323
524231314340
62452222443
7463162560
oct154220473
958363640
1028385595
1115028577
12960aa23
135b5b214
143aac867
15275a830
hex1b1213b

28385595 has 48 divisors (see below), whose sum is σ = 56871360. Its totient is φ = 12828672.

The previous prime is 28385579. The next prime is 28385627. The reversal of 28385595 is 59558382.

28385595 is a `hidden beast` number, since 28 + 38 + 5 + 595 = 666.

It is not a de Polignac number, because 28385595 - 24 = 28385579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28385595.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30091 + ... + 31019.

It is an arithmetic number, because the mean of its divisors is an integer number (1184820).

Almost surely, 228385595 is an apocalyptic number.

28385595 is an abundant number, since it is smaller than the sum of its proper divisors (28485765).

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

28385595 is a wasteful number, since it uses less digits than its factorization.

28385595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1041 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 28385595 is about 5327.8133413249. The cubic root of 28385595 is about 305.0464678820.

The spelling of 28385595 in words is "twenty-eight million, three hundred eighty-five thousand, five hundred ninety-five".

Divisors: 1 3 5 7 9 15 21 35 45 63 97 105 291 315 485 679 873 929 1455 2037 2787 3395 4365 4645 6111 6503 8361 10185 13935 19509 30555 32515 41805 58527 90113 97545 270339 292635 450565 630791 811017 1351695 1892373 3153955 4055085 5677119 9461865 28385595