80921088 has 120 divisors (see below), whose sum is σ = 247520988. Its totient is φ = 25362432.

The previous prime is 80921077. The next prime is 80921111. The reversal of 80921088 is 88012908.

It can be written as a sum of positive squares in 2 ways, for example, as 65804544 + 15116544 = 8112^2 + 3888^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77820 + ... + 78852.

Almost surely, 2^80921088 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 80921088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123760494).

80921088 is an abundant number, since it is smaller than the sum of its proper divisors (166599900).

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

80921088 is a wasteful number, since it uses less digits than its factorization.

80921088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 80921088 is about 8995.6149317320. The cubic root of 80921088 is about 432.5343182810.

It can be divided in two parts, 8092 and 1088, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 80921088 in words is "eighty million, nine hundred twenty-one thousand, eighty-eight".