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28853188 = 22713312557
BaseRepresentation
bin110111000010…
…0001111000100
32000021220010121
41232010033010
524341300223
62510231324
7500151040
oct156041704
960256117
1028853188
1115317911
1297b5544
135c92cc0
143b91020
1527ee15d
hex1b843c4

28853188 has 48 divisors (see below), whose sum is σ = 64175104. Its totient is φ = 11041920.

The previous prime is 28853179. The next prime is 28853197. The reversal of 28853188 is 88135882.

It is an interprime number because it is at equal distance from previous prime (28853179) and next prime (28853197).

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, 10006 + ... + 12562.

Almost surely, 228853188 is an apocalyptic number.

28853188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28853188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32087552).

28853188 is an abundant number, since it is smaller than the sum of its proper divisors (35321916).

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

28853188 is a wasteful number, since it uses less digits than its factorization.

28853188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612 (or 2610 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 28853188 is about 5371.5163594650. The cubic root of 28853188 is about 306.7123535167.

The spelling of 28853188 in words is "twenty-eight million, eight hundred fifty-three thousand, one hundred eighty-eight".

Divisors: 1 2 4 7 13 14 26 28 31 52 62 91 124 182 217 364 403 434 806 868 1612 2557 2821 5114 5642 10228 11284 17899 33241 35798 66482 71596 79267 132964 158534 232687 317068 465374 554869 930748 1030471 1109738 2060942 2219476 4121884 7213297 14426594 28853188