13990473280 has 112 divisors (see below), whose sum is σ = 38125359360. Its totient is φ = 4790274048.

The previous prime is 13990473253. The next prime is 13990473311. The reversal of 13990473280 is 8237409931.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 13990473280.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1839726 + ... + 1847314.

Almost surely, 2^13990473280 is an apocalyptic number.

13990473280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13990473280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19062679680).

13990473280 is an abundant number, since it is smaller than the sum of its proper divisors (24134886080).

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

13990473280 is an equidigital number, since it uses as much as digits as its factorization.

13990473280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8436 (or 8426 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 13990473280 in words is "thirteen billion, nine hundred ninety million, four hundred seventy-three thousand, two hundred eighty".