13323990 has 32 divisors (see below), whose sum is σ = 32368896. Its totient is φ = 3509600.

The previous prime is 13323979. The next prime is 13323991. The reversal of 13323990 is 9932331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13323991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (1011528).

Almost surely, 2^13323990 is an apocalyptic number.

13323990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13323990 is an abundant number, since it is smaller than the sum of its proper divisors (19044906).

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

13323990 is a wasteful number, since it uses less digits than its factorization.

13323990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 13323990 is about 3650.2041038824. The cubic root of 13323990 is about 237.0708186235.

The spelling of 13323990 in words is "thirteen million, three hundred twenty-three thousand, nine hundred ninety".