28612748 has 6 divisors (see below), whose sum is σ = 50072316. Its totient is φ = 14306372.

The previous prime is 28612747. The next prime is 28612757. The reversal of 28612748 is 84721682.

It is a super-2 number, since 2×28612748² = 1637378696223008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28612747) 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 as a sum of consecutive naturals, namely, 3576590 + ... + 3576597.

It is an arithmetic number, because the mean of its divisors is an integer number (8345386).

Almost surely, 2^28612748 is an apocalyptic number.

It is an amenable number.

28612748 is a deficient number, since it is larger than the sum of its proper divisors (21459568).

28612748 is a wasteful number, since it uses less digits than its factorization.

28612748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153191 (or 7153189 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 28612748 is about 5349.0885204865. The cubic root of 28612748 is about 305.8580086525.

The spelling of 28612748 in words is "twenty-eight million, six hundred twelve thousand, seven hundred forty-eight".