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13072969 = 713197561
BaseRepresentation
bin110001110111…
…101001001001
3220121011202001
4301313221021
511321313334
61144111001
7216055420
oct61675111
926534661
1013072969
117419a08
124465461
1329294b0
141a442b7
151233714
hexc77a49

13072969 has 16 divisors (see below), whose sum is σ = 16938880. Its totient is φ = 9797760.

The previous prime is 13072967. The next prime is 13072987. The reversal of 13072969 is 96927031.

13072969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13072969 - 21 = 13072967 is a prime.

It is a super-2 number, since 2×130729692 = 341805036949922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13072967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2052 + ... + 5509.

It is an arithmetic number, because the mean of its divisors is an integer number (1058680).

Almost surely, 213072969 is an apocalyptic number.

13072969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13072969 is the 2088-th hex number.

It is an amenable number.

13072969 is a deficient number, since it is larger than the sum of its proper divisors (3865911).

13072969 is a wasteful number, since it uses less digits than its factorization.

13072969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 13072969 is about 3615.6560953719. The cubic root of 13072969 is about 235.5725829315.

It can be divided in two parts, 13072 and 969, that added together give a palindrome (14041).

The spelling of 13072969 in words is "thirteen million, seventy-two thousand, nine hundred sixty-nine".

Divisors: 1 7 13 19 91 133 247 1729 7561 52927 98293 143659 688051 1005613 1867567 13072969