13685490 has 128 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 2882304.

The previous prime is 13685479. The next prime is 13685521. The reversal of 13685490 is 9458631.

13685490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24292 + ... + 24848.

It is an arithmetic number, because the mean of its divisors is an integer number (351540).

Almost surely, 2^13685490 is an apocalyptic number.

13685490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13685490 is the 2340-th heptagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13685490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

13685490 is an abundant number, since it is smaller than the sum of its proper divisors (31311630).

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

13685490 is a wasteful number, since it uses less digits than its factorization.

13685490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13685490 is about 3699.3904903376. The cubic root of 13685490 is about 239.1957454044.

The spelling of 13685490 in words is "thirteen million, six hundred eighty-five thousand, four hundred ninety".