28574636 has 12 divisors (see below), whose sum is σ = 50337840. Its totient is φ = 14192400.

The previous prime is 28574633. The next prime is 28574669. The reversal of 28574636 is 63647582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28574593 and 28574602.

It is not an unprimeable number, because it can be changed into a prime (28574633) by changing a digit.

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, 23051 + ... + 24258.

It is an arithmetic number, because the mean of its divisors is an integer number (4194820).

Almost surely, 2^28574636 is an apocalyptic number.

It is an amenable number.

28574636 is a deficient number, since it is larger than the sum of its proper divisors (21763204).

28574636 is a wasteful number, since it uses less digits than its factorization.

28574636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47464 (or 47462 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 28574636 is about 5345.5248572989. The cubic root of 28574636 is about 305.7221479996.

The spelling of 28574636 in words is "twenty-eight million, five hundred seventy-four thousand, six hundred thirty-six".