19045044 has 60 divisors (see below), whose sum is σ = 50982624. Its totient is φ = 6196176.

The previous prime is 19045003. The next prime is 19045069. The reversal of 19045044 is 44054091.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 19044999 and 19045017.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 13249 + ... + 14615.

Almost surely, 2^19045044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19045044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25491312).

19045044 is an abundant number, since it is smaller than the sum of its proper divisors (31937580).

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

19045044 is a wasteful number, since it uses less digits than its factorization.

19045044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 19045044 is about 4364.0627859828. The cubic root of 19045044 is about 267.0508677227.

The spelling of 19045044 in words is "nineteen million, forty-five thousand, forty-four".