28808153 has 4 divisors (see below), whose sum is σ = 31427088. Its totient is φ = 26189220.

The previous prime is 28808137. The next prime is 28808159. The reversal of 28808153 is 35180882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28808153 - 2⁴ = 28808137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28808159) 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, 1309451 + ... + 1309472.

It is an arithmetic number, because the mean of its divisors is an integer number (7856772).

Almost surely, 2^28808153 is an apocalyptic number.

It is an amenable number.

28808153 is a deficient number, since it is larger than the sum of its proper divisors (2618935).

28808153 is a wasteful number, since it uses less digits than its factorization.

28808153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618934.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28808153 is about 5367.3227031733. The cubic root of 28808153 is about 306.5526948618.

The spelling of 28808153 in words is "twenty-eight million, eight hundred eight thousand, one hundred fifty-three".