136441920 has 112 divisors (see below), whose sum is σ = 435547008. Its totient is φ = 36188160.

The previous prime is 136441901. The next prime is 136441951. The reversal of 136441920 is 29144631.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 298332 + ... + 298788.

Almost surely, 2^136441920 is an apocalyptic number.

136441920 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 136441920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217773504).

136441920 is an abundant number, since it is smaller than the sum of its proper divisors (299105088).

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

136441920 is a wasteful number, since it uses less digits than its factorization.

136441920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 136441920 is about 11680.8355865494. The cubic root of 136441920 is about 514.8127260767.

The spelling of 136441920 in words is "one hundred thirty-six million, four hundred forty-one thousand, nine hundred twenty".