13890279320 has 16 divisors (see below), whose sum is σ = 31253128560. Its totient is φ = 5556111712.

The previous prime is 13890279307. The next prime is 13890279331. The reversal of 13890279320 is 2397209831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173628452 + ... + 173628531.

It is an arithmetic number, because the mean of its divisors is an integer number (1953320535).

Almost surely, 2^13890279320 is an apocalyptic number.

13890279320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13890279320 is an abundant number, since it is smaller than the sum of its proper divisors (17362849240).

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

13890279320 is a wasteful number, since it uses less digits than its factorization.

13890279320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347256994 (or 347256990 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 13890279320 in words is "thirteen billion, eight hundred ninety million, two hundred seventy-nine thousand, three hundred twenty".