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13131464 = 236724499
BaseRepresentation
bin110010000101…
…111011001000
3220201010222112
4302011323020
511330201324
61145241452
7216421103
oct62057310
926633875
1013131464
117459955
124493288
132949cc8
141a5b73a
151245c0e
hexc85ec8

13131464 has 16 divisors (see below), whose sum is σ = 24990000. Its totient is φ = 6467472.

The previous prime is 13131449. The next prime is 13131467. The reversal of 13131464 is 46413131.

It is not an unprimeable number, because it can be changed into a prime (13131467) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11714 + ... + 12785.

It is an arithmetic number, because the mean of its divisors is an integer number (1561875).

Almost surely, 213131464 is an apocalyptic number.

It is an amenable number.

13131464 is a deficient number, since it is larger than the sum of its proper divisors (11858536).

13131464 is a wasteful number, since it uses less digits than its factorization.

13131464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24572 (or 24568 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 13131464 is about 3623.7361934887. The cubic root of 13131464 is about 235.9234166908.

Adding to 13131464 its reverse (46413131), we get a palindrome (59544595).

The spelling of 13131464 in words is "thirteen million, one hundred thirty-one thousand, four hundred sixty-four".

Divisors: 1 2 4 8 67 134 268 536 24499 48998 97996 195992 1641433 3282866 6565732 13131464