19481472 has 80 divisors (see below), whose sum is σ = 58007400. Its totient is φ = 6490368.

The previous prime is 19481471. The next prime is 19481521. The reversal of 19481472 is 27418491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19481471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9429 + ... + 11307.

Almost surely, 2^19481472 is an apocalyptic number.

19481472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19481472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29003700).

19481472 is an abundant number, since it is smaller than the sum of its proper divisors (38525928).

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

19481472 is an equidigital number, since it uses as much as digits as its factorization.

19481472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1884 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 19481472 is about 4413.7820517103. The cubic root of 19481472 is about 269.0753555877.

The spelling of 19481472 in words is "nineteen million, four hundred eighty-one thousand, four hundred seventy-two".