82403928240 has 80 divisors (see below), whose sum is σ = 255687134976. Its totient is φ = 21954169600.

The previous prime is 82403928163. The next prime is 82403928371. The reversal of 82403928240 is 4282930428.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 82403928192 and 82403928201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104485 + ... + 419195.

Almost surely, 2^82403928240 is an apocalyptic number.

82403928240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82403928240 is an abundant number, since it is smaller than the sum of its proper divisors (173283206736).

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

82403928240 is a wasteful number, since it uses less digits than its factorization.

82403928240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315818 (or 315812 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 82403928240 in words is "eighty-two billion, four hundred three million, nine hundred twenty-eight thousand, two hundred forty".