82864530 has 96 divisors (see below), whose sum is σ = 248811264. Its totient is φ = 18741888.

The previous prime is 82864517. The next prime is 82864531. The reversal of 82864530 is 3546828.

82864530 is a `hidden beast` number, since 8 + 2 + 8 + 645 + 3 + 0 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82864531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64252 + ... + 65528.

It is an arithmetic number, because the mean of its divisors is an integer number (2591784).

Almost surely, 2^82864530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82864530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124405632).

82864530 is an abundant number, since it is smaller than the sum of its proper divisors (165946734).

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

82864530 is a wasteful number, since it uses less digits than its factorization.

82864530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 82864530 is about 9102.9956607701. The cubic root of 82864530 is about 435.9696167420.

The spelling of 82864530 in words is "eighty-two million, eight hundred sixty-four thousand, five hundred thirty".