28370052 has 36 divisors (see below), whose sum is σ = 73071180. Its totient is φ = 9277632.

The previous prime is 28370029. The next prime is 28370077. The reversal of 28370052 is 25007382.

It can be written as a sum of positive squares in 2 ways, for example, as 13439556 + 14930496 = 3666^2 + 3864^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 28369998 and 28370025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5527 + ... + 9342.

It is an arithmetic number, because the mean of its divisors is an integer number (2029755).

Almost surely, 2^28370052 is an apocalyptic number.

It is an amenable number.

28370052 is an abundant number, since it is smaller than the sum of its proper divisors (44701128).

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

28370052 is a wasteful number, since it uses less digits than its factorization.

28370052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14932 (or 14927 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28370052 is about 5326.3544756240. The cubic root of 28370052 is about 304.9907799775.

The spelling of 28370052 in words is "twenty-eight million, three hundred seventy thousand, fifty-two".