28000624 has 20 divisors (see below), whose sum is σ = 54371520. Its totient is φ = 13969280.

The previous prime is 28000613. The next prime is 28000691. The reversal of 28000624 is 42600082.

It is a junction number, because it is equal to n+sod(n) for n = 28000595 and 28000604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6657 + ... + 10015.

It is an arithmetic number, because the mean of its divisors is an integer number (2718576).

Almost surely, 2^28000624 is an apocalyptic number.

It is an amenable number.

28000624 is a deficient number, since it is larger than the sum of its proper divisors (26370896).

28000624 is a wasteful number, since it uses less digits than its factorization.

28000624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888 (or 3882 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28000624 is about 5291.5615842585. The cubic root of 28000624 is about 303.6611529226.

The spelling of 28000624 in words is "twenty-eight million, six hundred twenty-four", and thus it is an aban number.