19040044 has 24 divisors (see below), whose sum is σ = 34927200. Its totient is φ = 9064704.

The previous prime is 19040041. The next prime is 19040053. The reversal of 19040044 is 44004091.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19039997 and 19040024.

It is not an unprimeable number, because it can be changed into a prime (19040041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31812 + ... + 32404.

It is an arithmetic number, because the mean of its divisors is an integer number (1455300).

Almost surely, 2^19040044 is an apocalyptic number.

It is an amenable number.

19040044 is a deficient number, since it is larger than the sum of its proper divisors (15887156).

19040044 is a wasteful number, since it uses less digits than its factorization.

19040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 19040044 is about 4363.4898876931. The cubic root of 19040044 is about 267.0274955670.

The spelling of 19040044 in words is "nineteen million, forty thousand, forty-four".