83903920 has 20 divisors (see below), whose sum is σ = 195076800. Its totient is φ = 33561536.

The previous prime is 83903861. The next prime is 83903927. The reversal of 83903920 is 2930938.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (83903927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524320 + ... + 524479.

It is an arithmetic number, because the mean of its divisors is an integer number (9753840).

Almost surely, 2^83903920 is an apocalyptic number.

83903920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83903920 is an abundant number, since it is smaller than the sum of its proper divisors (111172880).

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

83903920 is a wasteful number, since it uses less digits than its factorization.

83903920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048812 (or 1048806 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 83903920 is about 9159.9082964842. The cubic root of 83903920 is about 437.7848724280.

The spelling of 83903920 in words is "eighty-three million, nine hundred three thousand, nine hundred twenty".