28793973 has 16 divisors (see below), whose sum is σ = 41602176. Its totient is φ = 17609280.

The previous prime is 28793951. The next prime is 28793981. The reversal of 28793973 is 37939782.

It is not a de Polignac number, because 28793973 - 2¹² = 28789877 is a prime.

It is a super-2 number, since 2×28793973² = 1658185762249458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28793993) 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, 4303 + ... + 8723.

It is an arithmetic number, because the mean of its divisors is an integer number (2600136).

Almost surely, 2^28793973 is an apocalyptic number.

It is an amenable number.

28793973 is a deficient number, since it is larger than the sum of its proper divisors (12808203).

28793973 is a wasteful number, since it uses less digits than its factorization.

28793973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604.

The product of its digits is 571536, while the sum is 48.

The square root of 28793973 is about 5366.0015840475. The cubic root of 28793973 is about 306.5023893039.

The spelling of 28793973 in words is "twenty-eight million, seven hundred ninety-three thousand, nine hundred seventy-three".