28797579 has 8 divisors (see below), whose sum is σ = 42663120. Its totient is φ = 19198368.

The previous prime is 28797577. The next prime is 28797583. The reversal of 28797579 is 97579782.

It is not a de Polignac number, because 28797579 - 2¹ = 28797577 is a prime.

It is a super-2 number, since 2×28797579² = 1658601112522482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28797577) 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, 533262 + ... + 533315.

It is an arithmetic number, because the mean of its divisors is an integer number (5332890).

Almost surely, 2^28797579 is an apocalyptic number.

28797579 is a deficient number, since it is larger than the sum of its proper divisors (13865541).

28797579 is a wasteful number, since it uses less digits than its factorization.

28797579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066586 (or 1066580 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 28797579 is about 5366.3375779017. The cubic root of 28797579 is about 306.5151836652.

The spelling of 28797579 in words is "twenty-eight million, seven hundred ninety-seven thousand, five hundred seventy-nine".