28930473 has 64 divisors (see below), whose sum is σ = 51609600. Its totient is φ = 15785280.

The previous prime is 28930463. The next prime is 28930477. The reversal of 28930473 is 37403982.

28930473 is a `hidden beast` number, since 289 + 304 + 73 = 666.

It is not a de Polignac number, because 28930473 - 2⁴ = 28930457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 227736 + ... + 227862.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^28930473 is an apocalyptic number.

It is an amenable number.

28930473 is a deficient number, since it is larger than the sum of its proper divisors (22679127).

28930473 is a wasteful number, since it uses less digits than its factorization.

28930473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 28930473 is about 5378.7055134112. The cubic root of 28930473 is about 306.9859585368.

It can be divided in two parts, 28930 and 473, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28930473 in words is "twenty-eight million, nine hundred thirty thousand, four hundred seventy-three".