136988992 has 56 divisors (see below), whose sum is σ = 328964544. Its totient is φ = 55252992.

The previous prime is 136988987. The next prime is 136989019. The reversal of 136988992 is 299889631.

136988992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378 + ... + 16609.

Almost surely, 2^136988992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136988992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164482272).

136988992 is an abundant number, since it is smaller than the sum of its proper divisors (191975552).

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

136988992 is a wasteful number, since it uses less digits than its factorization.

136988992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18023 (or 18013 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 55.

The square root of 136988992 is about 11704.2296628185. The cubic root of 136988992 is about 515.4998659405.

The spelling of 136988992 in words is "one hundred thirty-six million, nine hundred eighty-eight thousand, nine hundred ninety-two".