28573736 has 16 divisors (see below), whose sum is σ = 56727540. Its totient is φ = 13446400.

The previous prime is 28573709. The next prime is 28573757. The reversal of 28573736 is 63737582.

It can be written as a sum of positive squares in 2 ways, for example, as 28408900 + 164836 = 5330^2 + 406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28573693 and 28573702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104915 + ... + 105186.

Almost surely, 2^28573736 is an apocalyptic number.

It is an amenable number.

28573736 is a deficient number, since it is larger than the sum of its proper divisors (28153804).

28573736 is a wasteful number, since it uses less digits than its factorization.

28573736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210124 (or 210120 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 28573736 is about 5345.4406740698. The cubic root of 28573736 is about 305.7189382436.

The spelling of 28573736 in words is "twenty-eight million, five hundred seventy-three thousand, seven hundred thirty-six".