82758540 has 48 divisors (see below), whose sum is σ = 236662272. Its totient is φ = 21598656.

The previous prime is 82758479. The next prime is 82758563. The reversal of 82758540 is 4585728.

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, 11854 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (4930464).

Almost surely, 2^82758540 is an apocalyptic number.

It is an amenable number.

82758540 is an abundant number, since it is smaller than the sum of its proper divisors (153903732).

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

82758540 is a wasteful number, since it uses less digits than its factorization.

82758540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29406 (or 29404 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 82758540 is about 9097.1720880722. The cubic root of 82758540 is about 435.7836580652.

The spelling of 82758540 in words is "eighty-two million, seven hundred fifty-eight thousand, five hundred forty".