28155752 has 32 divisors (see below), whose sum is σ = 55031400. Its totient is φ = 13488384.

The previous prime is 28155737. The next prime is 28155761. The reversal of 28155752 is 25755182.

It can be written as a sum of positive squares in 4 ways, for example, as 15007876 + 13147876 = 3874^2 + 3626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36038 + ... + 36810.

Almost surely, 2^28155752 is an apocalyptic number.

It is an amenable number.

28155752 is a deficient number, since it is larger than the sum of its proper divisors (26875648).

28155752 is a wasteful number, since it uses less digits than its factorization.

28155752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 961 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 28155752 is about 5306.1993931627. The cubic root of 28155752 is about 304.2208978510.

The spelling of 28155752 in words is "twenty-eight million, one hundred fifty-five thousand, seven hundred fifty-two".