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15128142 = 23191311013
BaseRepresentation
bin111001101101…
…011001001110
31001110120220120
4321231121032
512333100032
61300125410
7242405241
oct71553116
931416816
1015128142
1185a2aa7
125096866
133198a83
14201b258
1514dc62c
hexe6d64e

15128142 has 32 divisors (see below), whose sum is σ = 32123520. Its totient is φ = 4736160.

The previous prime is 15128137. The next prime is 15128167. The reversal of 15128142 is 24182151.

It is a congruent number.

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, 14428 + ... + 15440.

It is an arithmetic number, because the mean of its divisors is an integer number (1003860).

Almost surely, 215128142 is an apocalyptic number.

15128142 is an abundant number, since it is smaller than the sum of its proper divisors (16995378).

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

15128142 is a wasteful number, since it uses less digits than its factorization.

15128142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its digits is 640, while the sum is 24.

The square root of 15128142 is about 3889.4912263688. The cubic root of 15128142 is about 247.3214956123.

The spelling of 15128142 in words is "fifteen million, one hundred twenty-eight thousand, one hundred forty-two".

Divisors: 1 2 3 6 19 38 57 114 131 262 393 786 1013 2026 2489 3039 4978 6078 7467 14934 19247 38494 57741 115482 132703 265406 398109 796218 2521357 5042714 7564071 15128142