80920320 has 144 divisors (see below), whose sum is σ = 278490912. Its totient is φ = 19906560.

The previous prime is 80920319. The next prime is 80920327. The reversal of 80920320 is 2302908.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80920327) 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, 49110 + ... + 50730.

Almost surely, 2^80920320 is an apocalyptic number.

80920320 is a gapful number since it is divisible by the number (80) 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 80920320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139245456).

80920320 is an abundant number, since it is smaller than the sum of its proper divisors (197570592).

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

80920320 is a wasteful number, since it uses less digits than its factorization.

80920320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 80920320 is about 8995.5722441655. The cubic root of 80920320 is about 432.5329499215.

The spelling of 80920320 in words is "eighty million, nine hundred twenty thousand, three hundred twenty".