80988440 has 32 divisors (see below), whose sum is σ = 196242480. Its totient is φ = 29903232.

The previous prime is 80988421. The next prime is 80988499. The reversal of 80988440 is 4488908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77354 + ... + 78393.

Almost surely, 2^80988440 is an apocalyptic number.

It is an amenable number.

80988440 is an abundant number, since it is smaller than the sum of its proper divisors (115254040).

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

80988440 is a wasteful number, since it uses less digits than its factorization.

80988440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155771 (or 155767 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 80988440 is about 8999.3577548623. The cubic root of 80988440 is about 432.6542868969.

The spelling of 80988440 in words is "eighty million, nine hundred eighty-eight thousand, four hundred forty".