136623172 has 36 divisors (see below), whose sum is σ = 284062464. Its totient is φ = 57303120.

The previous prime is 136623161. The next prime is 136623181. The reversal of 136623172 is 271326631.

It is a super-2 number, since 2×136623172² = 37331782254683168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1797 + ... + 16627.

It is an arithmetic number, because the mean of its divisors is an integer number (7890624).

Almost surely, 2^136623172 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 136623172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142031232).

136623172 is an abundant number, since it is smaller than the sum of its proper divisors (147439292).

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

136623172 is a wasteful number, since it uses less digits than its factorization.

136623172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14896 (or 14887 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 136623172 is about 11688.5915319169. The cubic root of 136623172 is about 515.0405874946.

The spelling of 136623172 in words is "one hundred thirty-six million, six hundred twenty-three thousand, one hundred seventy-two".