19012230 has 24 divisors (see below), whose sum is σ = 49432032. Its totient is φ = 5069904.

The previous prime is 19012199. The next prime is 19012241. The reversal of 19012230 is 3221091.

It is a happy number.

It is a super-2 number, since 2×19012230² = 722929779145800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105534 + ... + 105713.

It is an arithmetic number, because the mean of its divisors is an integer number (2059668).

Almost surely, 2^19012230 is an apocalyptic number.

19012230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19012230 is an abundant number, since it is smaller than the sum of its proper divisors (30419802).

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

19012230 is a wasteful number, since it uses less digits than its factorization.

19012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211260 (or 211257 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 19012230 is about 4360.3015950734. The cubic root of 19012230 is about 266.8974061925.

The spelling of 19012230 in words is "nineteen million, twelve thousand, two hundred thirty".