19113472 has 40 divisors (see below), whose sum is σ = 43653456. Its totient is φ = 8189952.

The previous prime is 19113467. The next prime is 19113499. The reversal of 19113472 is 27431191.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 19113472.

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, 918 + ... + 6250.

Almost surely, 2^19113472 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 19113472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21826728).

19113472 is an abundant number, since it is smaller than the sum of its proper divisors (24539984).

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

19113472 is an frugal number, since it uses more digits than its factorization.

19113472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358 (or 5342 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 19113472 is about 4371.8956986644. The cubic root of 19113472 is about 267.3703194177.

The spelling of 19113472 in words is "nineteen million, one hundred thirteen thousand, four hundred seventy-two".