82724428 has 6 divisors (see below), whose sum is σ = 144767756. Its totient is φ = 41362212.

The previous prime is 82724419. The next prime is 82724459. The reversal of 82724428 is 82442728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10340550 + ... + 10340557.

Almost surely, 2^82724428 is an apocalyptic number.

It is an amenable number.

82724428 is a deficient number, since it is larger than the sum of its proper divisors (62043328).

82724428 is a wasteful number, since it uses less digits than its factorization.

82724428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20681111 (or 20681109 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 82724428 is about 9095.2970264857. The cubic root of 82724428 is about 435.7237750406.

The spelling of 82724428 in words is "eighty-two million, seven hundred twenty-four thousand, four hundred twenty-eight".