82521024 has 28 divisors (see below), whose sum is σ = 218337384. Its totient is φ = 27506944.

The previous prime is 82521013. The next prime is 82521029. The reversal of 82521024 is 42012528.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 82520985 and 82521003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82521029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214707 + ... + 215090.

Almost surely, 2^82521024 is an apocalyptic number.

It is an amenable number.

82521024 is an abundant number, since it is smaller than the sum of its proper divisors (135816360).

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

82521024 is a wasteful number, since it uses less digits than its factorization.

82521024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429812 (or 429802 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 82521024 is about 9084.1083216791. The cubic root of 82521024 is about 435.3663606704.

The spelling of 82521024 in words is "eighty-two million, five hundred twenty-one thousand, twenty-four".