28788965 has 8 divisors (see below), whose sum is σ = 34963488. Its totient is φ = 22753360.

The previous prime is 28788913. The next prime is 28788979. The reversal of 28788965 is 56988782.

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

It is not a de Polignac number, because 28788965 - 2⁶ = 28788901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34271 + ... + 35100.

It is an arithmetic number, because the mean of its divisors is an integer number (4370436).

Almost surely, 2^28788965 is an apocalyptic number.

It is an amenable number.

28788965 is a deficient number, since it is larger than the sum of its proper divisors (6174523).

28788965 is an equidigital number, since it uses as much as digits as its factorization.

28788965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69459.

The product of its digits is 1935360, while the sum is 53.

The square root of 28788965 is about 5365.5349220744. The cubic root of 28788965 is about 306.4846187683.

The spelling of 28788965 in words is "twenty-eight million, seven hundred eighty-eight thousand, nine hundred sixty-five".