28923924 has 24 divisors (see below), whose sum is σ = 68634720. Its totient is φ = 9477664.

The previous prime is 28923911. The next prime is 28923931. The reversal of 28923924 is 42932982.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19719 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (2859780).

Almost surely, 2^28923924 is an apocalyptic number.

It is an amenable number.

28923924 is an abundant number, since it is smaller than the sum of its proper divisors (39710796).

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

28923924 is a wasteful number, since it uses less digits than its factorization.

28923924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40919 (or 40917 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 28923924 is about 5378.0966893502. The cubic root of 28923924 is about 306.9627926204.

The spelling of 28923924 in words is "twenty-eight million, nine hundred twenty-three thousand, nine hundred twenty-four".