82157698 has 16 divisors (see below), whose sum is σ = 141920064. Its totient is φ = 34940880.

The previous prime is 82157689. The next prime is 82157701. The reversal of 82157698 is 89675128.

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, 20565 + ... + 24232.

It is an arithmetic number, because the mean of its divisors is an integer number (8870004).

Almost surely, 2^82157698 is an apocalyptic number.

82157698 is a deficient number, since it is larger than the sum of its proper divisors (59762366).

82157698 is a wasteful number, since it uses less digits than its factorization.

82157698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44937.

The product of its digits is 241920, while the sum is 46.

The square root of 82157698 is about 9064.0883711491. The cubic root of 82157698 is about 434.7264726895.

The spelling of 82157698 in words is "eighty-two million, one hundred fifty-seven thousand, six hundred ninety-eight".