136385580 has 72 divisors (see below), whose sum is σ = 389056752. Its totient is φ = 35698304.

The previous prime is 136385567. The next prime is 136385593. The reversal of 136385580 is 85583631.

It is an interprime number because it is at equal distance from previous prime (136385567) and next prime (136385593).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208534 + ... + 209186.

It is an arithmetic number, because the mean of its divisors is an integer number (5403566).

Almost surely, 2^136385580 is an apocalyptic number.

136385580 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 136385580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194528376).

136385580 is an abundant number, since it is smaller than the sum of its proper divisors (252671172).

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

136385580 is a wasteful number, since it uses less digits than its factorization.

136385580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 136385580 is about 11678.4236950027. The cubic root of 136385580 is about 514.7418569916.

The spelling of 136385580 in words is "one hundred thirty-six million, three hundred eighty-five thousand, five hundred eighty".