28921052 has 12 divisors (see below), whose sum is σ = 50657376. Its totient is φ = 14447520.

The previous prime is 28921037. The next prime is 28921073. The reversal of 28921052 is 25012982.

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, 3152 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (4221448).

Almost surely, 2^28921052 is an apocalyptic number.

It is an amenable number.

28921052 is a deficient number, since it is larger than the sum of its proper divisors (21736324).

28921052 is a wasteful number, since it uses less digits than its factorization.

28921052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6508 (or 6506 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28921052 is about 5377.8296737625. The cubic root of 28921052 is about 306.9526323309.

The spelling of 28921052 in words is "twenty-eight million, nine hundred twenty-one thousand, fifty-two".