13992437628 has 36 divisors (see below), whose sum is σ = 38090525928. Its totient is φ = 4305365280.

The previous prime is 13992437623. The next prime is 13992437663. The reversal of 13992437628 is 82673429931.

13992437628 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 2 + 4 + 3 + 7 + 628 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13992437623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14948718 + ... + 14949653.

Almost surely, 2^13992437628 is an apocalyptic number.

13992437628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13992437628 is an abundant number, since it is smaller than the sum of its proper divisors (24098088300).

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

13992437628 is a wasteful number, since it uses less digits than its factorization.

13992437628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29898394 (or 29898389 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 13992437628 in words is "thirteen billion, nine hundred ninety-two million, four hundred thirty-seven thousand, six hundred twenty-eight".