80215920 has 100 divisors (see below), whose sum is σ = 278624280. Its totient is φ = 21389184.

The previous prime is 80215901. The next prime is 80215937. The reversal of 80215920 is 2951208.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 291 + ... + 12669.

Almost surely, 2^80215920 is an apocalyptic number.

80215920 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 80215920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139312140).

80215920 is an abundant number, since it is smaller than the sum of its proper divisors (198408360).

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

80215920 is a wasteful number, since it uses less digits than its factorization.

80215920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404 (or 12389 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80215920 is about 8956.3340714826. The cubic root of 80215920 is about 431.2742443837.

It can be divided in two parts, 80 and 215920, that added together give a cube (216000 = 60³).

The spelling of 80215920 in words is "eighty million, two hundred fifteen thousand, nine hundred twenty".