19472904 has 96 divisors (see below), whose sum is σ = 60091200. Its totient is φ = 5639040.

The previous prime is 19472903. The next prime is 19472911. The reversal of 19472904 is 40927491.

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

It is not an unprimeable number, because it can be changed into a prime (19472903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17682 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (625950).

Almost surely, 2^19472904 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 19472904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30045600).

19472904 is an abundant number, since it is smaller than the sum of its proper divisors (40618296).

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

19472904 is a wasteful number, since it uses less digits than its factorization.

19472904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 19472904 is about 4412.8113487889. The cubic root of 19472904 is about 269.0359031325.

It can be divided in two parts, 1947 and 2904, that added together give a triangular number (4851 = T₉₈).

The spelling of 19472904 in words is "nineteen million, four hundred seventy-two thousand, nine hundred four".