82732440 has 64 divisors (see below), whose sum is σ = 283656960. Its totient is φ = 18910080.

The previous prime is 82732439. The next prime is 82732451. The reversal of 82732440 is 4423728.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 82732398 and 82732407.

It is a congruent number.

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, 48406 + ... + 50085.

It is an arithmetic number, because the mean of its divisors is an integer number (4432140).

Almost surely, 2^82732440 is an apocalyptic number.

It is an amenable number.

82732440 is an abundant number, since it is smaller than the sum of its proper divisors (200924520).

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

82732440 is a wasteful number, since it uses less digits than its factorization.

82732440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98512 (or 98508 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 82732440 is about 9095.7374632297. The cubic root of 82732440 is about 435.7378414467.

The spelling of 82732440 in words is "eighty-two million, seven hundred thirty-two thousand, four hundred forty".