82917928 has 16 divisors (see below), whose sum is σ = 157075380. Its totient is φ = 41031168.

The previous prime is 82917907. The next prime is 82917929. The reversal of 82917928 is 82971928.

It can be written as a sum of positive squares in 2 ways, for example, as 75724804 + 7193124 = 8702^2 + 2682^2 .

It is not an unprimeable number, because it can be changed into a prime (82917929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52651 + ... + 54202.

Almost surely, 2^82917928 is an apocalyptic number.

It is an amenable number.

82917928 is a deficient number, since it is larger than the sum of its proper divisors (74157452).

82917928 is a wasteful number, since it uses less digits than its factorization.

82917928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106956 (or 106952 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 82917928 is about 9105.9281789393. The cubic root of 82917928 is about 436.0632430775.

It can be divided in two parts, 82917 and 928, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 82917928 in words is "eighty-two million, nine hundred seventeen thousand, nine hundred twenty-eight".