13558990 has 16 divisors (see below), whose sum is σ = 24867648. Its totient is φ = 5321056.

The previous prime is 13558981. The next prime is 13559003. The reversal of 13558990 is 9985531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12262 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (1554228).

Almost surely, 2^13558990 is an apocalyptic number.

13558990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13558990 is a deficient number, since it is larger than the sum of its proper divisors (11308658).

13558990 is a wasteful number, since it uses less digits than its factorization.

13558990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25643.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 13558990 is about 3682.2533861754. The cubic root of 13558990 is about 238.4564715965.

The spelling of 13558990 in words is "thirteen million, five hundred fifty-eight thousand, nine hundred ninety".