28605633424 has 15 divisors (see below), whose sum is σ = 55424725563. Its totient is φ = 14302478448.

The previous prime is 28605633401. The next prime is 28605633443. The reversal of 28605633424 is 42433650682.

It is a happy number.

The square root of 28605633424 is 169132.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 655387 + ... + 697669.

Almost surely, 2^28605633424 is an apocalyptic number.

28605633424 is the 169132-nd square number.

It is an amenable number.

28605633424 is a deficient number, since it is larger than the sum of its proper divisors (26819092139).

28605633424 is an frugal number, since it uses more digits than its factorization.

28605633424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84574 (or 42285 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 28605633424 in words is "twenty-eight billion, six hundred five million, six hundred thirty-three thousand, four hundred twenty-four".