82425870 has 32 divisors (see below), whose sum is σ = 219803040. Its totient is φ = 21980160.

The previous prime is 82425851. The next prime is 82425887. The reversal of 82425870 is 7852428.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 152371 + ... + 152910.

It is an arithmetic number, because the mean of its divisors is an integer number (6868845).

Almost surely, 2^82425870 is an apocalyptic number.

82425870 is an abundant number, since it is smaller than the sum of its proper divisors (137377170).

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

82425870 is a wasteful number, since it uses less digits than its factorization.

82425870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305297 (or 305291 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 82425870 is about 9078.8694230064. The cubic root of 82425870 is about 435.1989577395.

The spelling of 82425870 in words is "eighty-two million, four hundred twenty-five thousand, eight hundred seventy".