13019856 has 40 divisors (see below), whose sum is σ = 34548384. Its totient is φ = 4222080.

The previous prime is 13019813. The next prime is 13019857. The reversal of 13019856 is 65891031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13019857) 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 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 5441.

Almost surely, 2^13019856 is an apocalyptic number.

13019856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13019856 is an abundant number, since it is smaller than the sum of its proper divisors (21528528).

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

13019856 is a wasteful number, since it uses less digits than its factorization.

13019856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379 (or 7373 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13019856 is about 3608.3037566147. The cubic root of 13019856 is about 235.2531209554.

The spelling of 13019856 in words is "thirteen million, nineteen thousand, eight hundred fifty-six".