19089228 has 24 divisors (see below), whose sum is σ = 44960832. Its totient is φ = 6303184.

The previous prime is 19089223. The next prime is 19089229. The reversal of 19089228 is 82298091.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19089223) 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, 6150 + ... + 8717.

It is an arithmetic number, because the mean of its divisors is an integer number (1873368).

Almost surely, 2^19089228 is an apocalyptic number.

It is an amenable number.

19089228 is an abundant number, since it is smaller than the sum of its proper divisors (25871604).

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

19089228 is a wasteful number, since it uses less digits than its factorization.

19089228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14981 (or 14979 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 19089228 is about 4369.1221086163. The cubic root of 19089228 is about 267.2572252146.

The spelling of 19089228 in words is "nineteen million, eighty-nine thousand, two hundred twenty-eight".