28453091 has 8 divisors (see below), whose sum is σ = 28987584. Its totient is φ = 27921960.

The previous prime is 28453063. The next prime is 28453123. The reversal of 28453091 is 19035482.

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 28453091 - 2⁶ = 28453027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28453391) 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, 21536 + ... + 22818.

It is an arithmetic number, because the mean of its divisors is an integer number (3623448).

Almost surely, 2^28453091 is an apocalyptic number.

28453091 is a deficient number, since it is larger than the sum of its proper divisors (534493).

28453091 is a wasteful number, since it uses less digits than its factorization.

28453091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28453091 is about 5334.1438863233. The cubic root of 28453091 is about 305.2880589493.

The spelling of 28453091 in words is "twenty-eight million, four hundred fifty-three thousand, ninety-one".