13539880 has 16 divisors (see below), whose sum is σ = 30464820. Its totient is φ = 5415936.

The previous prime is 13539853. The next prime is 13539899. The reversal of 13539880 is 8893531.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 1387684 = 3486^2 + 1178^2 .

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 3 ways as a sum of consecutive naturals, for example, 169209 + ... + 169288.

Almost surely, 2^13539880 is an apocalyptic number.

13539880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13539880 is an abundant number, since it is smaller than the sum of its proper divisors (16924940).

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

13539880 is a wasteful number, since it uses less digits than its factorization.

13539880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338508 (or 338504 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13539880 is about 3679.6575927659. The cubic root of 13539880 is about 238.3443923124.

The spelling of 13539880 in words is "thirteen million, five hundred thirty-nine thousand, eight hundred eighty".