28733979 has 8 divisors (see below), whose sum is σ = 38651472. Its totient is φ = 18986240.

The previous prime is 28733977. The next prime is 28733987. The reversal of 28733979 is 97933782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28733979 - 2¹ = 28733977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28733977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42042 + ... + 42719.

It is an arithmetic number, because the mean of its divisors is an integer number (4831434).

Almost surely, 2^28733979 is an apocalyptic number.

28733979 is a deficient number, since it is larger than the sum of its proper divisors (9917493).

28733979 is a wasteful number, since it uses less digits than its factorization.

28733979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84877.

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

The square root of 28733979 is about 5360.4084732416. The cubic root of 28733979 is about 306.2893691440.

The spelling of 28733979 in words is "twenty-eight million, seven hundred thirty-three thousand, nine hundred seventy-nine".