82489400 has 48 divisors (see below), whose sum is σ = 219189840. Its totient is φ = 28281600.

The previous prime is 82489399. The next prime is 82489439. The reversal of 82489400 is 498428.

It is a super-2 number, since 2×82489400² = 13609002224720000, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28061 + ... + 30860.

It is an arithmetic number, because the mean of its divisors is an integer number (4566455).

Almost surely, 2^82489400 is an apocalyptic number.

It is an amenable number.

82489400 is an abundant number, since it is smaller than the sum of its proper divisors (136700440).

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

82489400 is a wasteful number, since it uses less digits than its factorization.

82489400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58944 (or 58935 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 82489400 is about 9082.3675327527. The cubic root of 82489400 is about 435.3107393501.

The spelling of 82489400 in words is "eighty-two million, four hundred eighty-nine thousand, four hundred".