28473832 has 8 divisors (see below), whose sum is σ = 53388450. Its totient is φ = 14236912.

The previous prime is 28473829. The next prime is 28473833. The reversal of 28473832 is 23837482.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17089956 + 11383876 = 4134^2 + 3374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28473791 and 28473800.

It is not an unprimeable number, because it can be changed into a prime (28473833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1779607 + ... + 1779622.

Almost surely, 2^28473832 is an apocalyptic number.

It is an amenable number.

28473832 is a deficient number, since it is larger than the sum of its proper divisors (24914618).

28473832 is a wasteful number, since it uses less digits than its factorization.

28473832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559235 (or 3559231 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 28473832 is about 5336.0877054261. The cubic root of 28473832 is about 305.3622212688.

The spelling of 28473832 in words is "twenty-eight million, four hundred seventy-three thousand, eight hundred thirty-two".