13293990 has 64 divisors (see below), whose sum is σ = 36158400. Its totient is φ = 3474432.

The previous prime is 13293971. The next prime is 13293991. The reversal of 13293990 is 9939231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13293991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13846 + ... + 14774.

It is an arithmetic number, because the mean of its divisors is an integer number (564975).

Almost surely, 2^13293990 is an apocalyptic number.

13293990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13293990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18079200).

13293990 is an abundant number, since it is smaller than the sum of its proper divisors (22864410).

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

13293990 is a wasteful number, since it uses less digits than its factorization.

13293990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 13293990 is about 3646.0924288888. The cubic root of 13293990 is about 236.8927571199.

The spelling of 13293990 in words is "thirteen million, two hundred ninety-three thousand, nine hundred ninety".