28748924 has 12 divisors (see below), whose sum is σ = 50358000. Its totient is φ = 14360928.

The previous prime is 28748917. The next prime is 28748927. The reversal of 28748924 is 42984782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28748927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552 + ... + 8000.

It is an arithmetic number, because the mean of its divisors is an integer number (4196500).

Almost surely, 2^28748924 is an apocalyptic number.

It is an amenable number.

28748924 is a deficient number, since it is larger than the sum of its proper divisors (21609076).

28748924 is a wasteful number, since it uses less digits than its factorization.

28748924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772 (or 6770 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 28748924 is about 5361.8023089256. The cubic root of 28748924 is about 306.3424619329.

The spelling of 28748924 in words is "twenty-eight million, seven hundred forty-eight thousand, nine hundred twenty-four".