28456205924 has 6 divisors (see below), whose sum is σ = 49798360374. Its totient is φ = 14228102960.

The previous prime is 28456205917. The next prime is 28456205929. The reversal of 28456205924 is 42950265482.

It can be written as a sum of positive squares in only one way, i.e., 25354829824 + 3101376100 = 159232^2 + 55690^2 .

It is not an unprimeable number, because it can be changed into a prime (28456205929) 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 as a sum of consecutive naturals, namely, 3557025737 + ... + 3557025744.

It is an arithmetic number, because the mean of its divisors is an integer number (8299726729).

Almost surely, 2^28456205924 is an apocalyptic number.

It is an amenable number.

28456205924 is a deficient number, since it is larger than the sum of its proper divisors (21342154450).

28456205924 is a wasteful number, since it uses less digits than its factorization.

28456205924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114051485 (or 7114051483 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 28456205924 in words is "twenty-eight billion, four hundred fifty-six million, two hundred five thousand, nine hundred twenty-four".