28153652 has 12 divisors (see below), whose sum is σ = 49395780. Its totient is φ = 14040576.

The previous prime is 28153639. The next prime is 28153661. The reversal of 28153652 is 25635182.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 9265936 = 4346^2 + 3044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7277 + ... + 10452.

It is an arithmetic number, because the mean of its divisors is an integer number (4116315).

Almost surely, 2^28153652 is an apocalyptic number.

It is an amenable number.

28153652 is a deficient number, since it is larger than the sum of its proper divisors (21242128).

28153652 is a wasteful number, since it uses less digits than its factorization.

28153652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18130 (or 18128 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 28153652 is about 5306.0015077269. The cubic root of 28153652 is about 304.2133342127.

The spelling of 28153652 in words is "twenty-eight million, one hundred fifty-three thousand, six hundred fifty-two".