28004952 has 32 divisors (see below), whose sum is σ = 72428400. Its totient is φ = 9012864.

The previous prime is 28004941. The next prime is 28004953. The reversal of 28004952 is 25940082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28004953) 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, 19423 + ... + 20814.

Almost surely, 2^28004952 is an apocalyptic number.

It is an amenable number.

28004952 is an abundant number, since it is smaller than the sum of its proper divisors (44423448).

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

28004952 is a wasteful number, since it uses less digits than its factorization.

28004952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40275 (or 40271 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28004952 is about 5291.9705214598. The cubic root of 28004952 is about 303.6767975473.

The spelling of 28004952 in words is "twenty-eight million, four thousand, nine hundred fifty-two".