136783920 has 160 divisors (see below), whose sum is σ = 521966592. Its totient is φ = 28855296.

The previous prime is 136783909. The next prime is 136783939. The reversal of 136783920 is 29387631.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18709 + ... + 24971.

Almost surely, 2^136783920 is an apocalyptic number.

136783920 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 136783920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260983296).

136783920 is an abundant number, since it is smaller than the sum of its proper divisors (385182672).

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

136783920 is a wasteful number, since it uses less digits than its factorization.

136783920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299 (or 6293 counting only the distinct ones).

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

The square root of 136783920 is about 11695.4657880736. The cubic root of 136783920 is about 515.2425036947.

The spelling of 136783920 in words is "one hundred thirty-six million, seven hundred eighty-three thousand, nine hundred twenty".