82812870 has 48 divisors (see below), whose sum is σ = 246074400. Its totient is φ = 18928512.

The previous prime is 82812869. The next prime is 82812881. The reversal of 82812870 is 7821828.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65095 + ... + 66354.

It is an arithmetic number, because the mean of its divisors is an integer number (5126550).

Almost surely, 2^82812870 is an apocalyptic number.

82812870 is an abundant number, since it is smaller than the sum of its proper divisors (163261530).

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

82812870 is a wasteful number, since it uses less digits than its factorization.

82812870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131469 (or 131466 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 82812870 is about 9100.1576909414. The cubic root of 82812870 is about 435.8789994725.

The spelling of 82812870 in words is "eighty-two million, eight hundred twelve thousand, eight hundred seventy".