82544840 has 32 divisors (see below), whose sum is σ = 212258880. Its totient is φ = 28300992.

The previous prime is 82544827. The next prime is 82544851. The reversal of 82544840 is 4844528.

It is a super-2 number, since 2×82544840² = 13627301221251200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 82544840.

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, 147122 + ... + 147681.

It is an arithmetic number, because the mean of its divisors is an integer number (6633090).

Almost surely, 2^82544840 is an apocalyptic number.

It is an amenable number.

82544840 is an abundant number, since it is smaller than the sum of its proper divisors (129714040).

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

82544840 is a wasteful number, since it uses less digits than its factorization.

82544840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294821 (or 294817 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 82544840 is about 9085.4190877471. The cubic root of 82544840 is about 435.4082396462.

The spelling of 82544840 in words is "eighty-two million, five hundred forty-four thousand, eight hundred forty".