28796091 has 8 divisors (see below), whose sum is σ = 38921040. Its totient is φ = 18934272.

The previous prime is 28796083. The next prime is 28796093. The reversal of 28796091 is 19069782.

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

It is not a de Polignac number, because 28796091 - 2³ = 28796083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28796093) 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, 65526 + ... + 65963.

It is an arithmetic number, because the mean of its divisors is an integer number (4865130).

Almost surely, 2^28796091 is an apocalyptic number.

28796091 is a deficient number, since it is larger than the sum of its proper divisors (10124949).

28796091 is a wasteful number, since it uses less digits than its factorization.

28796091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131565.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 28796091 is about 5366.1989340687. The cubic root of 28796091 is about 306.5099042579.

The spelling of 28796091 in words is "twenty-eight million, seven hundred ninety-six thousand, ninety-one".