28824621604 has 12 divisors (see below), whose sum is σ = 50472207324. Its totient is φ = 14403990944.

The previous prime is 28824621571. The next prime is 28824621613. The reversal of 28824621604 is 40612642882.

It can be written as a sum of positive squares in 2 ways, for example, as 23740646400 + 5083975204 = 154080^2 + 71302^2 .

It is a super-2 number, since 2×28824621604² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2072167 + ... + 2086030.

It is an arithmetic number, because the mean of its divisors is an integer number (4206017277).

Almost surely, 2^28824621604 is an apocalyptic number.

It is an amenable number.

28824621604 is a deficient number, since it is larger than the sum of its proper divisors (21647585720).

28824621604 is a wasteful number, since it uses less digits than its factorization.

28824621604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159934 (or 4159932 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 28824621604 in words is "twenty-eight billion, eight hundred twenty-four million, six hundred twenty-one thousand, six hundred four".