28728152 has 32 divisors (see below), whose sum is σ = 56971200. Its totient is φ = 13543200.

The previous prime is 28728151. The next prime is 28728157. The reversal of 28728152 is 25182782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28728151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50027 + ... + 50597.

It is an arithmetic number, because the mean of its divisors is an integer number (1780350).

Almost surely, 2^28728152 is an apocalyptic number.

It is an amenable number.

28728152 is a deficient number, since it is larger than the sum of its proper divisors (28243048).

28728152 is a wasteful number, since it uses less digits than its factorization.

28728152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 923 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 28728152 is about 5359.8649236711. The cubic root of 28728152 is about 306.2686634746.

The spelling of 28728152 in words is "twenty-eight million, seven hundred twenty-eight thousand, one hundred fifty-two".