13158228 has 24 divisors (see below), whose sum is σ = 31762080. Its totient is φ = 4234720.

The previous prime is 13158227. The next prime is 13158247. The reversal of 13158228 is 82285131.

It is a junction number, because it is equal to n+sod(n) for n = 13158195 and 13158204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13158227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18558 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (1323420).

Almost surely, 2^13158228 is an apocalyptic number.

It is an amenable number.

13158228 is an abundant number, since it is smaller than the sum of its proper divisors (18603852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13158228 is a wasteful number, since it uses less digits than its factorization.

13158228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37847 (or 37845 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 13158228 is about 3627.4271874153. The cubic root of 13158228 is about 236.0835909958.

The spelling of 13158228 in words is "thirteen million, one hundred fifty-eight thousand, two hundred twenty-eight".