82440880 has 20 divisors (see below), whose sum is σ = 191675232. Its totient is φ = 32976320.

The previous prime is 82440863. The next prime is 82440893. The reversal of 82440880 is 8804428.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515176 + ... + 515335.

Almost surely, 2^82440880 is an apocalyptic number.

82440880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82440880 is an abundant number, since it is smaller than the sum of its proper divisors (109234352).

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

82440880 is a wasteful number, since it uses less digits than its factorization.

82440880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030524 (or 1030518 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 82440880 is about 9079.6960301543. The cubic root of 82440880 is about 435.2253731512.

The spelling of 82440880 in words is "eighty-two million, four hundred forty thousand, eight hundred eighty".