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28838051 = 112238331
BaseRepresentation
bin110111000000…
…0100010100011
32000021010100222
41232000202203
524340304201
62510033255
7500055644
oct156004243
960233328
1028838051
1115307500
1297a882b
135c89148
143b896cb
1527e991b
hex1b808a3

28838051 has 6 divisors (see below), whose sum is σ = 31698156. Its totient is φ = 26216300.

The previous prime is 28838039. The next prime is 28838053. The reversal of 28838051 is 15083882.

It is not a de Polignac number, because 28838051 - 26 = 28837987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28838053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119045 + ... + 119286.

It is an arithmetic number, because the mean of its divisors is an integer number (5283026).

Almost surely, 228838051 is an apocalyptic number.

28838051 is a deficient number, since it is larger than the sum of its proper divisors (2860105).

28838051 is a wasteful number, since it uses less digits than its factorization.

28838051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238353 (or 238342 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28838051 is about 5370.1071683906. The cubic root of 28838051 is about 306.6587081793.

The spelling of 28838051 in words is "twenty-eight million, eight hundred thirty-eight thousand, fifty-one".

Divisors: 1 11 121 238331 2621641 28838051