82440090 has 48 divisors (see below), whose sum is σ = 214856928. Its totient is φ = 21931488.

The previous prime is 82440047. The next prime is 82440101. The reversal of 82440090 is 9004428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49857 + ... + 51483.

It is an arithmetic number, because the mean of its divisors is an integer number (4476186).

Almost surely, 2^82440090 is an apocalyptic number.

82440090 is an abundant number, since it is smaller than the sum of its proper divisors (132416838).

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

82440090 is a wasteful number, since it uses less digits than its factorization.

82440090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203 (or 2200 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 82440090 is about 9079.6525263911. The cubic root of 82440090 is about 435.2239829463.

The spelling of 82440090 in words is "eighty-two million, four hundred forty thousand, ninety".