13856990 has 16 divisors (see below), whose sum is σ = 28505952. Its totient is φ = 4750944.

The previous prime is 13856987. The next prime is 13856993. The reversal of 13856990 is 9965831.

It is an interprime number because it is at equal distance from previous prime (13856987) and next prime (13856993).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98909 + ... + 99048.

It is an arithmetic number, because the mean of its divisors is an integer number (1781622).

Almost surely, 2^13856990 is an apocalyptic number.

13856990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13856990 is an abundant number, since it is smaller than the sum of its proper divisors (14648962).

13856990 is a wasteful number, since it uses less digits than its factorization.

13856990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197971.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 13856990 is about 3722.4978173264. The cubic root of 13856990 is about 240.1907626850.

The spelling of 13856990 in words is "thirteen million, eight hundred fifty-six thousand, nine hundred ninety".