28000052 has 12 divisors (see below), whose sum is σ = 50139936. Its totient is φ = 13674360.

The previous prime is 28000031. The next prime is 28000061. The reversal of 28000052 is 25000082.

It is a happy number.

28000052 is a modest number, since divided by 52 gives 28 as remainder.

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, 81224 + ... + 81567.

It is an arithmetic number, because the mean of its divisors is an integer number (4178328).

Almost surely, 2^28000052 is an apocalyptic number.

It is an amenable number.

28000052 is a deficient number, since it is larger than the sum of its proper divisors (22139884).

28000052 is a wasteful number, since it uses less digits than its factorization.

28000052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162838 (or 162836 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 28000052 is about 5291.5075356650. The cubic root of 28000052 is about 303.6590851668.

The spelling of 28000052 in words is "twenty-eight million, fifty-two", and thus it is an aban number and an uban number.