80195920 has 80 divisors (see below), whose sum is σ = 216200448. Its totient is φ = 27095040.

The previous prime is 80195897. The next prime is 80195971. The reversal of 80195920 is 2959108.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38752 + ... + 40768.

Almost surely, 2^80195920 is an apocalyptic number.

80195920 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 80195920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108100224).

80195920 is an abundant number, since it is smaller than the sum of its proper divisors (136004528).

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

80195920 is a wasteful number, since it uses less digits than its factorization.

80195920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2102 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 80195920 is about 8955.2174736295. The cubic root of 80195920 is about 431.2383986237.

It can be divided in two parts, 801 and 95920, that added together give a square (96721 = 311²).

The spelling of 80195920 in words is "eighty million, one hundred ninety-five thousand, nine hundred twenty".