28473932 has 24 divisors (see below), whose sum is σ = 53449200. Its totient is φ = 13231296.

The previous prime is 28473901. The next prime is 28473937. The reversal of 28473932 is 23937482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (28473937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494 + ... + 7562.

It is an arithmetic number, because the mean of its divisors is an integer number (2227050).

Almost surely, 2^28473932 is an apocalyptic number.

It is an amenable number.

28473932 is a deficient number, since it is larger than the sum of its proper divisors (24975268).

28473932 is a wasteful number, since it uses less digits than its factorization.

28473932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145 (or 7143 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 28473932 is about 5336.0970755787. The cubic root of 28473932 is about 305.3625787454.

The spelling of 28473932 in words is "twenty-eight million, four hundred seventy-three thousand, nine hundred thirty-two".