28793902 has 4 divisors (see below), whose sum is σ = 43190856. Its totient is φ = 14396950.

The previous prime is 28793899. The next prime is 28793917. The reversal of 28793902 is 20939782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20939782 = 2 ⋅10469891.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7198474 + ... + 7198477.

It is an arithmetic number, because the mean of its divisors is an integer number (10797714).

Almost surely, 2^28793902 is an apocalyptic number.

28793902 is a deficient number, since it is larger than the sum of its proper divisors (14396954).

28793902 is a wasteful number, since it uses less digits than its factorization.

28793902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14396953.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 28793902 is about 5365.9949683167. The cubic root of 28793902 is about 306.5021373798.

The spelling of 28793902 in words is "twenty-eight million, seven hundred ninety-three thousand, nine hundred two".