19145244 has 12 divisors (see below), whose sum is σ = 44672264. Its totient is φ = 6381744.

The previous prime is 19145209. The next prime is 19145261. The reversal of 19145244 is 44254191.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×19145244³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797707 + ... + 797730.

Almost surely, 2^19145244 is an apocalyptic number.

It is an amenable number.

19145244 is an abundant number, since it is smaller than the sum of its proper divisors (25527020).

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

19145244 is a wasteful number, since it uses less digits than its factorization.

19145244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595444 (or 1595442 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 19145244 is about 4375.5278538709. The cubic root of 19145244 is about 267.5183857861.

The spelling of 19145244 in words is "nineteen million, one hundred forty-five thousand, two hundred forty-four".