82519870 has 16 divisors (see below), whose sum is σ = 157273488. Its totient is φ = 31066240.

The previous prime is 82519849. The next prime is 82519897. The reversal of 82519870 is 7891528.

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, 242536 + ... + 242875.

It is an arithmetic number, because the mean of its divisors is an integer number (9829593).

Almost surely, 2^82519870 is an apocalyptic number.

82519870 is a deficient number, since it is larger than the sum of its proper divisors (74753618).

82519870 is a wasteful number, since it uses less digits than its factorization.

82519870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485435.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 82519870 is about 9084.0448039406. The cubic root of 82519870 is about 435.3643312274.

The spelling of 82519870 in words is "eighty-two million, five hundred nineteen thousand, eight hundred seventy".