136445720 has 16 divisors (see below), whose sum is σ = 307002960. Its totient is φ = 54578272.

The previous prime is 136445713. The next prime is 136445753. The reversal of 136445720 is 27544631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705532 + ... + 1705611.

It is an arithmetic number, because the mean of its divisors is an integer number (19187685).

Almost surely, 2^136445720 is an apocalyptic number.

136445720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136445720 is an abundant number, since it is smaller than the sum of its proper divisors (170557240).

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

136445720 is a wasteful number, since it uses less digits than its factorization.

136445720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411154 (or 3411150 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 136445720 is about 11680.9982450131. The cubic root of 136445720 is about 514.8175053268.

The spelling of 136445720 in words is "one hundred thirty-six million, four hundred forty-five thousand, seven hundred twenty".