28573191632 has 20 divisors (see below), whose sum is σ = 56118924900. Its totient is φ = 14090888448.

The previous prime is 28573191631. The next prime is 28573191637. The reversal of 28573191632 is 23619137582.

It can be written as a sum of positive squares in 2 ways, for example, as 5385211456 + 23187980176 = 73384^2 + 152276^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573191631) 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, 12230507 + ... + 12232842.

It is an arithmetic number, because the mean of its divisors is an integer number (2805946245).

Almost surely, 2^28573191632 is an apocalyptic number.

It is an amenable number.

28573191632 is a deficient number, since it is larger than the sum of its proper divisors (27545733268).

28573191632 is a wasteful number, since it uses less digits than its factorization.

28573191632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24463430 (or 24463424 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The spelling of 28573191632 in words is "twenty-eight billion, five hundred seventy-three million, one hundred ninety-one thousand, six hundred thirty-two".