136920992 has 96 divisors (see below), whose sum is σ = 323870400. Its totient is φ = 56291328.

The previous prime is 136920961. The next prime is 136921013. The reversal of 136920992 is 299029631.

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, 133859 + ... + 134877.

It is an arithmetic number, because the mean of its divisors is an integer number (3373650).

Almost surely, 2^136920992 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 136920992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161935200).

136920992 is an abundant number, since it is smaller than the sum of its proper divisors (186949408).

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

136920992 is a wasteful number, since it uses less digits than its factorization.

136920992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 136920992 is about 11701.3243694891. The cubic root of 136920992 is about 515.4145554540.

The spelling of 136920992 in words is "one hundred thirty-six million, nine hundred twenty thousand, nine hundred ninety-two".