28474473 has 16 divisors (see below), whose sum is σ = 40340160. Its totient is φ = 17803776.

The previous prime is 28474469. The next prime is 28474477. The reversal of 28474473 is 37447482.

It is an interprime number because it is at equal distance from previous prime (28474469) and next prime (28474477).

It is not a de Polignac number, because 28474473 - 2² = 28474469 is a prime.

It is a super-3 number, since 3×28474473³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28474477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16893 + ... + 18501.

It is an arithmetic number, because the mean of its divisors is an integer number (2521260).

Almost surely, 2^28474473 is an apocalyptic number.

It is an amenable number.

28474473 is a deficient number, since it is larger than the sum of its proper divisors (11865687).

28474473 is a wasteful number, since it uses less digits than its factorization.

28474473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976.

The product of its digits is 150528, while the sum is 39.

The square root of 28474473 is about 5336.1477678190. The cubic root of 28474473 is about 305.3645126793.

The spelling of 28474473 in words is "twenty-eight million, four hundred seventy-four thousand, four hundred seventy-three".