28797133 has 8 divisors (see below), whose sum is σ = 31008960. Its totient is φ = 26642880.

The previous prime is 28797101. The next prime is 28797149. The reversal of 28797133 is 33179782.

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 28797133 - 2⁵ = 28797101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28797163) 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, 13353 + ... + 15358.

It is an arithmetic number, because the mean of its divisors is an integer number (3876120).

Almost surely, 2^28797133 is an apocalyptic number.

It is an amenable number.

28797133 is a deficient number, since it is larger than the sum of its proper divisors (2211827).

28797133 is a wasteful number, since it uses less digits than its factorization.

28797133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28787.

The product of its digits is 63504, while the sum is 40.

The square root of 28797133 is about 5366.2960223976. The cubic root of 28797133 is about 306.5136012813.

The spelling of 28797133 in words is "twenty-eight million, seven hundred ninety-seven thousand, one hundred thirty-three".