136873920 has 112 divisors (see below), whose sum is σ = 453542400. Its totient is φ = 34907136.

The previous prime is 136873837. The next prime is 136873921. The reversal of 136873920 is 29378631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136873921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18981 + ... + 25179.

Almost surely, 2^136873920 is an apocalyptic number.

136873920 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 136873920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226771200).

136873920 is an abundant number, since it is smaller than the sum of its proper divisors (316668480).

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

136873920 is a wasteful number, since it uses less digits than its factorization.

136873920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242 (or 6232 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 136873920 is about 11699.3128003315. The cubic root of 136873920 is about 515.3554839793.

The spelling of 136873920 in words is "one hundred thirty-six million, eight hundred seventy-three thousand, nine hundred twenty".