83136920 has 32 divisors (see below), whose sum is σ = 188107920. Its totient is φ = 33068160.

The previous prime is 83136901. The next prime is 83136929. The reversal of 83136920 is 2963138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83136929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499 + ... + 12981.

Almost surely, 2^83136920 is an apocalyptic number.

It is an amenable number.

83136920 is an abundant number, since it is smaller than the sum of its proper divisors (104971000).

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

83136920 is a wasteful number, since it uses less digits than its factorization.

83136920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11675 (or 11671 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 83136920 is about 9117.9449439005. The cubic root of 83136920 is about 436.4467967033.

The spelling of 83136920 in words is "eighty-three million, one hundred thirty-six thousand, nine hundred twenty".