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130836387 = 31125715427
BaseRepresentation
bin1111100110001…
…10011110100011
3100010012011210010
413303012132203
5231443231022
620552140003
73146043123
oct763063643
9303164703
10130836387
1167943350
1237997603
132114c3a6
141353ac83
15b74650c
hex7cc67a3

130836387 has 16 divisors (see below), whose sum is σ = 191060352. Its totient is φ = 78981120.

The previous prime is 130836379. The next prime is 130836427. The reversal of 130836387 is 783638031.

It is not a de Polignac number, because 130836387 - 23 = 130836379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130836347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768 + ... + 16194.

It is an arithmetic number, because the mean of its divisors is an integer number (11941272).

Almost surely, 2130836387 is an apocalyptic number.

130836387 is a deficient number, since it is larger than the sum of its proper divisors (60223965).

130836387 is a wasteful number, since it uses less digits than its factorization.

130836387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 130836387 is about 11438.3734420590. The cubic root of 130836387 is about 507.6637820608.

The spelling of 130836387 in words is "one hundred thirty million, eight hundred thirty-six thousand, three hundred eighty-seven".

Divisors: 1 3 11 33 257 771 2827 8481 15427 46281 169697 509091 3964739 11894217 43612129 130836387