19221044 has 12 divisors (see below), whose sum is σ = 33747168. Its totient is φ = 9579000.

The previous prime is 19221029. The next prime is 19221047. The reversal of 19221044 is 44012291.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19221047) 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, 6482 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (2812264).

Almost surely, 2^19221044 is an apocalyptic number.

It is an amenable number.

19221044 is a deficient number, since it is larger than the sum of its proper divisors (14526124).

19221044 is a wasteful number, since it uses less digits than its factorization.

19221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15766 (or 15764 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 19221044 is about 4384.1811093977. The cubic root of 19221044 is about 267.8709745001.

The spelling of 19221044 in words is "nineteen million, two hundred twenty-one thousand, forty-four".