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BaseRepresentation
bin110001101011…
…111001110001
3220111201210000
4301223321301
511313244011
61143100213
7215465262
oct61537161
926451700
1013024881
117396871
124441669
13291063c
141a30969
151224356
hexc6be71

13024881 has 15 divisors (see below), whose sum is σ = 19505563. Its totient is φ = 8661600.

The previous prime is 13024871. The next prime is 13024889. The reversal of 13024881 is 18842031.

The square root of 13024881 is 3609.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12895281 + 129600 = 3591^2 + 360^2 .

It is not a de Polignac number, because 13024881 - 25 = 13024849 is a prime.

It is a super-2 number, since 2×130248812 = 339295050128322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13024889) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 32281 + ... + 32681.

Almost surely, 213024881 is an apocalyptic number.

13024881 is the 3609-th square number.

13024881 is the 1805-th centered octagonal number.

It is an amenable number.

13024881 is a deficient number, since it is larger than the sum of its proper divisors (6480682).

13024881 is an frugal number, since it uses more digits than its factorization.

13024881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The cubic root of 13024881 is about 235.2833822957.

The spelling of 13024881 in words is "thirteen million, twenty-four thousand, eight hundred eighty-one".