19904015472 has 160 divisors (see below), whose sum is σ = 57851297280. Its totient is φ = 5844480000.

The previous prime is 19904015441. The next prime is 19904015473. The reversal of 19904015472 is 27451040991.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19904015473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3265804 + ... + 3271892.

It is an arithmetic number, because the mean of its divisors is an integer number (361570608).

Almost surely, 2^19904015472 is an apocalyptic number.

19904015472 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 19904015472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28925648640).

19904015472 is an abundant number, since it is smaller than the sum of its proper divisors (37947281808).

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

19904015472 is a wasteful number, since it uses less digits than its factorization.

19904015472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303 (or 6297 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 19904015472 in words is "nineteen billion, nine hundred four million, fifteen thousand, four hundred seventy-two".