82540870 has 16 divisors (see below), whose sum is σ = 149964048. Its totient is φ = 32707360.

The previous prime is 82540853. The next prime is 82540891. The reversal of 82540870 is 7804528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37501 + ... + 39640.

It is an arithmetic number, because the mean of its divisors is an integer number (9372753).

Almost surely, 2^82540870 is an apocalyptic number.

82540870 is a deficient number, since it is larger than the sum of its proper divisors (67423178).

82540870 is a wasteful number, since it uses less digits than its factorization.

82540870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77255.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 82540870 is about 9085.2006031788. The cubic root of 82540870 is about 435.4012592041.

The spelling of 82540870 in words is "eighty-two million, five hundred forty thousand, eight hundred seventy".