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28899054 = 23213711719
BaseRepresentation
bin110111000111…
…1011011101110
32000101020001100
41232033123232
524344232204
62511223530
7500431542
oct156173356
960336040
1028899054
1115349318
129817ba6
135caab42
143ba3a22
15280ca39
hex1b8f6ee

28899054 has 24 divisors (see below), whose sum is σ = 63077040. Its totient is φ = 9561888.

The previous prime is 28899011. The next prime is 28899083. The reversal of 28899054 is 45099882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3394 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (2628210).

Almost surely, 228899054 is an apocalyptic number.

28899054 is an abundant number, since it is smaller than the sum of its proper divisors (34177986).

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

28899054 is a wasteful number, since it uses less digits than its factorization.

28899054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864 (or 11861 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 28899054 is about 5375.7840358407. The cubic root of 28899054 is about 306.8747875747.

The spelling of 28899054 in words is "twenty-eight million, eight hundred ninety-nine thousand, fifty-four".

Divisors: 1 2 3 6 9 18 137 274 411 822 1233 2466 11719 23438 35157 70314 105471 210942 1605503 3211006 4816509 9633018 14449527 28899054