13523480 has 32 divisors (see below), whose sum is σ = 31006800. Its totient is φ = 5306496.

The previous prime is 13523479. The next prime is 13523513. The reversal of 13523480 is 8432531.

13523480 = 371² + 372² + ... + 450².

It is a super-2 number, since 2×13523480² = 365769022620800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 5309.

Almost surely, 2^13523480 is an apocalyptic number.

13523480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13523480 is an abundant number, since it is smaller than the sum of its proper divisors (17483320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13523480 is a wasteful number, since it uses less digits than its factorization.

13523480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6439 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 13523480 is about 3677.4284493379. The cubic root of 13523480 is about 238.2481229393.

The spelling of 13523480 in words is "thirteen million, five hundred twenty-three thousand, four hundred eighty".