80531892 has 108 divisors (see below), whose sum is σ = 240510816. Its totient is φ = 22649760.

The previous prime is 80531887. The next prime is 80531897. The reversal of 80531892 is 29813508.

It is an interprime number because it is at equal distance from previous prime (80531887) and next prime (80531897).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80531897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 124923 + ... + 125565.

It is an arithmetic number, because the mean of its divisors is an integer number (2226952).

Almost surely, 2^80531892 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 80531892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120255408).

80531892 is an abundant number, since it is smaller than the sum of its proper divisors (159978924).

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

80531892 is a wasteful number, since it uses less digits than its factorization.

80531892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 80531892 is about 8973.9563181464. The cubic root of 80531892 is about 431.8397682512.

The spelling of 80531892 in words is "eighty million, five hundred thirty-one thousand, eight hundred ninety-two".