28573845444 has 45 divisors (see below), whose sum is σ = 74705631231. Its totient is φ = 9523600920.

The previous prime is 28573845413. The next prime is 28573845467. The reversal of 28573845444 is 44454837582.

The square root of 28573845444 is 169038.

It is a perfect power (a square), and thus also a powerful number.

28573845444 is a `hidden beast` number, since 2 + 85 + 73 + 8 + 454 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3037989 + ... + 3047379.

Almost surely, 2^28573845444 is an apocalyptic number.

28573845444 is the 169038-th square number.

It is an amenable number.

28573845444 is an abundant number, since it is smaller than the sum of its proper divisors (46131785787).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28573845444 is an frugal number, since it uses more digits than its factorization.

28573845444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798 (or 9396 counting only the distinct ones).

The product of its digits is 17203200, while the sum is 54.

The spelling of 28573845444 in words is "twenty-eight billion, five hundred seventy-three million, eight hundred forty-five thousand, four hundred forty-four".