28797319 has 4 divisors (see below), whose sum is σ = 29790360. Its totient is φ = 27804280.

The previous prime is 28797283. The next prime is 28797343. The reversal of 28797319 is 91379782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28797319 - 2⁷ = 28797191 is a prime.

It is a super-2 number, since 2×28797319² = 1658571163175522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28797619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496477 + ... + 496534.

It is an arithmetic number, because the mean of its divisors is an integer number (7447590).

Almost surely, 2^28797319 is an apocalyptic number.

28797319 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28797319 is a deficient number, since it is larger than the sum of its proper divisors (993041).

28797319 is an equidigital number, since it uses as much as digits as its factorization.

28797319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993040.

The product of its digits is 190512, while the sum is 46.

The square root of 28797319 is about 5366.3133527590. The cubic root of 28797319 is about 306.5142612012.

The spelling of 28797319 in words is "twenty-eight million, seven hundred ninety-seven thousand, three hundred nineteen".