28473456 has 40 divisors (see below), whose sum is σ = 80244864. Its totient is φ = 8628160.

The previous prime is 28473443. The next prime is 28473491. The reversal of 28473456 is 65437482.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26436 + ... + 27491.

Almost surely, 2^28473456 is an apocalyptic number.

It is an amenable number.

28473456 is an abundant number, since it is smaller than the sum of its proper divisors (51771408).

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

28473456 is a wasteful number, since it uses less digits than its factorization.

28473456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53949 (or 53943 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 28473456 is about 5336.0524735051. The cubic root of 28473456 is about 305.3608771493.

The spelling of 28473456 in words is "twenty-eight million, four hundred seventy-three thousand, four hundred fifty-six".