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130872865 = 5431274793
BaseRepresentation
bin1111100110011…
…11011000100001
3100010021000211011
413303033120201
5232000412430
620553020521
73146254354
oct763173041
9303230734
10130872865
11679687a2
12379b4741
1321162b86
141354a29b
15b75222a
hex7ccf621

130872865 has 16 divisors (see below), whose sum is σ = 161998848. Its totient is φ = 101437056.

The previous prime is 130872857. The next prime is 130872883. The reversal of 130872865 is 568278031.

It is a cyclic number.

It is not a de Polignac number, because 130872865 - 23 = 130872857 is a prime.

It is a Duffinian 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, 24909 + ... + 29701.

It is an arithmetic number, because the mean of its divisors is an integer number (10124928).

Almost surely, 2130872865 is an apocalyptic number.

It is an amenable number.

130872865 is a deficient number, since it is larger than the sum of its proper divisors (31125983).

130872865 is a wasteful number, since it uses less digits than its factorization.

130872865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 130872865 is about 11439.9678758290. The cubic root of 130872865 is about 507.7109576188.

The spelling of 130872865 in words is "one hundred thirty million, eight hundred seventy-two thousand, eight hundred sixty-five".

Divisors: 1 5 43 127 215 635 4793 5461 23965 27305 206099 608711 1030495 3043555 26174573 130872865