28023952 has 20 divisors (see below), whose sum is σ = 59232816. Its totient is φ = 12738080.

The previous prime is 28023943. The next prime is 28023971. The reversal of 28023952 is 25932082.

It is a super-3 number, since 3×28023952³ (a number of 23 digits) contains 333 as substring.

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, 79438 + ... + 79789.

Almost surely, 2^28023952 is an apocalyptic number.

28023952 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28023952 is an abundant number, since it is smaller than the sum of its proper divisors (31208864).

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

28023952 is a wasteful number, since it uses less digits than its factorization.

28023952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159246 (or 159240 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28023952 is about 5293.7653895880. The cubic root of 28023952 is about 303.7454586754.

The spelling of 28023952 in words is "twenty-eight million, twenty-three thousand, nine hundred fifty-two".