28472512 has 14 divisors (see below), whose sum is σ = 56500268. Its totient is φ = 14236224.

The previous prime is 28472489. The next prime is 28472533. The reversal of 28472512 is 21527482.

It is a happy 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 as a sum of consecutive naturals, namely, 222378 + ... + 222505.

Almost surely, 2^28472512 is an apocalyptic number.

It is an amenable number.

28472512 is a deficient number, since it is larger than the sum of its proper divisors (28027756).

28472512 is an equidigital number, since it uses as much as digits as its factorization.

28472512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444895 (or 444885 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 28472512 is about 5335.9640178697. The cubic root of 28472512 is about 305.3575024992.

Adding to 28472512 its reverse (21527482), we get a palindrome (49999994).

The spelling of 28472512 in words is "twenty-eight million, four hundred seventy-two thousand, five hundred twelve".