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28115034 = 2343591847
BaseRepresentation
bin110101101000…
…0000001011010
31221220101120120
41223100001122
524144140114
62442334110
7460655013
oct153200132
957811516
1028115034
1114963272
1294ba336
135a9501c
143a3c00a
1527055a9
hex1ad005a

28115034 has 32 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 8993712.

The previous prime is 28115023. The next prime is 28115051. The reversal of 28115034 is 43051182.

It is a junction number, because it is equal to n+sod(n) for n = 28114995 and 28115013.

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, 14299 + ... + 16145.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 228115034 is an apocalyptic number.

28115034 is an abundant number, since it is smaller than the sum of its proper divisors (30429606).

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

28115034 is a wasteful number, since it uses less digits than its factorization.

28115034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28115034 is about 5302.3611721572. The cubic root of 28115034 is about 304.0741754017.

The spelling of 28115034 in words is "twenty-eight million, one hundred fifteen thousand, thirty-four".

Divisors: 1 2 3 6 43 59 86 118 129 177 258 354 1847 2537 3694 5074 5541 7611 11082 15222 79421 108973 158842 217946 238263 326919 476526 653838 4685839 9371678 14057517 28115034