28158153 has 4 divisors (see below), whose sum is σ = 37544208. Its totient is φ = 18772100.

The previous prime is 28158083. The next prime is 28158173. The reversal of 28158153 is 35185182.

It is a happy number.

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 28158153 - 2⁸ = 28157897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28158173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4693023 + ... + 4693028.

It is an arithmetic number, because the mean of its divisors is an integer number (9386052).

Almost surely, 2^28158153 is an apocalyptic number.

It is an amenable number.

28158153 is a deficient number, since it is larger than the sum of its proper divisors (9386055).

28158153 is an equidigital number, since it uses as much as digits as its factorization.

28158153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9386054.

The product of its digits is 9600, while the sum is 33.

The square root of 28158153 is about 5306.4256331357. The cubic root of 28158153 is about 304.2295451500.

The spelling of 28158153 in words is "twenty-eight million, one hundred fifty-eight thousand, one hundred fifty-three".