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15291042 = 2313196039
BaseRepresentation
bin111010010101…
…001010100010
31001202212100220
4322111022202
512403303132
61303423510
7243654204
oct72251242
931685326
1015291042
1186a4428
125154b96
133224c70
142060774
151520a2c
hexe952a2

15291042 has 16 divisors (see below), whose sum is σ = 32934720. Its totient is φ = 4704912.

The previous prime is 15291037. The next prime is 15291079. The reversal of 15291042 is 24019251.

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 7 ways as a sum of consecutive naturals, for example, 97942 + ... + 98097.

It is an arithmetic number, because the mean of its divisors is an integer number (2058420).

Almost surely, 215291042 is an apocalyptic number.

15291042 is an abundant number, since it is smaller than the sum of its proper divisors (17643678).

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

15291042 is a wasteful number, since it uses less digits than its factorization.

15291042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196057.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 15291042 is about 3910.3761967361. The cubic root of 15291042 is about 248.2060484089.

The spelling of 15291042 in words is "fifteen million, two hundred ninety-one thousand, forty-two".

Divisors: 1 2 3 6 13 26 39 78 196039 392078 588117 1176234 2548507 5097014 7645521 15291042