82536420 has 48 divisors (see below), whose sum is σ = 241153920. Its totient is φ = 21052416.

The previous prime is 82536401. The next prime is 82536431. The reversal of 82536420 is 2463528.

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

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, 28525 + ... + 31284.

It is an arithmetic number, because the mean of its divisors is an integer number (5024040).

Almost surely, 2^82536420 is an apocalyptic number.

It is an amenable number.

82536420 is an abundant number, since it is smaller than the sum of its proper divisors (158617500).

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

82536420 is a wasteful number, since it uses less digits than its factorization.

82536420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59844 (or 59842 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 82536420 is about 9084.9556960945. The cubic root of 82536420 is about 435.3934345131.

Adding to 82536420 its reverse (2463528), we get a palindrome (84999948).

The spelling of 82536420 in words is "eighty-two million, five hundred thirty-six thousand, four hundred twenty".