28322724057 has 8 divisors (see below), whose sum is σ = 37769650560. Its totient is φ = 18878806800.

The previous prime is 28322724049. The next prime is 28322724071. The reversal of 28322724057 is 75042722382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28322724057 - 2³ = 28322724049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28322724257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730257 + ... + 768062.

It is an arithmetic number, because the mean of its divisors is an integer number (4721206320).

Almost surely, 2^28322724057 is an apocalyptic number.

It is an amenable number.

28322724057 is a deficient number, since it is larger than the sum of its proper divisors (9446926503).

28322724057 is a wasteful number, since it uses less digits than its factorization.

28322724057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504623.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 28322724057 in words is "twenty-eight billion, three hundred twenty-two million, seven hundred twenty-four thousand, fifty-seven".