80197992 has 256 divisors, whose sum is σ = 276480000. Its totient is φ = 21047040.

The previous prime is 80197969. The next prime is 80198011. The reversal of 80197992 is 29979108.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1359259 + ... + 1359317.

It is an arithmetic number, because the mean of its divisors is an integer number (1080000).

Almost surely, 2^80197992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80197992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138240000).

80197992 is an abundant number, since it is smaller than the sum of its proper divisors (196282008).

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

80197992 is a wasteful number, since it uses less digits than its factorization.

80197992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 80197992 is about 8955.3331596318. Note that the first 3 decimals coincide. The cubic root of 80197992 is about 431.2421125211.

The spelling of 80197992 in words is "eighty million, one hundred ninety-seven thousand, nine hundred ninety-two".