82749928 has 8 divisors (see below), whose sum is σ = 155156130. Its totient is φ = 41374960.

The previous prime is 82749913. The next prime is 82749967. The reversal of 82749928 is 82994728.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 11819844 = 8422^2 + 3438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5171863 + ... + 5171878.

Almost surely, 2^82749928 is an apocalyptic number.

It is an amenable number.

82749928 is a deficient number, since it is larger than the sum of its proper divisors (72406202).

82749928 is a wasteful number, since it uses less digits than its factorization.

82749928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343747 (or 10343743 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 82749928 is about 9096.6987418514. The cubic root of 82749928 is about 435.7685414016.

The spelling of 82749928 in words is "eighty-two million, seven hundred forty-nine thousand, nine hundred twenty-eight".