28319952 has 40 divisors (see below), whose sum is σ = 73566720. Its totient is φ = 9387520.

The previous prime is 28319933. The next prime is 28319959. The reversal of 28319952 is 25991382.

It is a self number, because there is not a number n which added to its sum of digits gives 28319952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28319959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7624 + ... + 10712.

It is an arithmetic number, because the mean of its divisors is an integer number (1839168).

Almost surely, 2^28319952 is an apocalyptic number.

It is an amenable number.

28319952 is an abundant number, since it is smaller than the sum of its proper divisors (45246768).

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

28319952 is a wasteful number, since it uses less digits than its factorization.

28319952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3285 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 28319952 is about 5321.6493683819. The cubic root of 28319952 is about 304.8111417039.

The spelling of 28319952 in words is "twenty-eight million, three hundred nineteen thousand, nine hundred fifty-two".