28897952 has 24 divisors (see below), whose sum is σ = 58730112. Its totient is φ = 13982400.

The previous prime is 28897937. The next prime is 28897991. The reversal of 28897952 is 25979882.

It is a self number, because there is not a number n which added to its sum of digits gives 28897952.

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, 13574 + ... + 15557.

It is an arithmetic number, because the mean of its divisors is an integer number (2447088).

Almost surely, 2^28897952 is an apocalyptic number.

It is an amenable number.

28897952 is an abundant number, since it is smaller than the sum of its proper divisors (29832160).

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

28897952 is a wasteful number, since it uses less digits than its factorization.

28897952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29172 (or 29164 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 28897952 is about 5375.6815381866. The cubic root of 28897952 is about 306.8708868667.

The spelling of 28897952 in words is "twenty-eight million, eight hundred ninety-seven thousand, nine hundred fifty-two".