28749696 has 32 divisors (see below), whose sum is σ = 76367400. Its totient is φ = 9583104.

The previous prime is 28749689. The next prime is 28749713. The reversal of 28749696 is 69694782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37051 + ... + 37818.

Almost surely, 2^28749696 is an apocalyptic number.

It is an amenable number.

28749696 is an abundant number, since it is smaller than the sum of its proper divisors (47617704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28749696 is an equidigital number, since it uses as much as digits as its factorization.

28749696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74886 (or 74874 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 28749696 is about 5361.8742991607. The cubic root of 28749696 is about 306.3452039980.

The spelling of 28749696 in words is "twenty-eight million, seven hundred forty-nine thousand, six hundred ninety-six".