19487228004 has 72 divisors (see below), whose sum is σ = 50576434272. Its totient is φ = 6322792320.

The previous prime is 19487228003. The next prime is 19487228011. The reversal of 19487228004 is 40082278491.

It is not an unprimeable number, because it can be changed into a prime (19487228003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638967 + ... + 668769.

It is an arithmetic number, because the mean of its divisors is an integer number (702450476).

Almost surely, 2^19487228004 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 19487228004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25288217136).

19487228004 is an abundant number, since it is smaller than the sum of its proper divisors (31089206268).

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

19487228004 is a wasteful number, since it uses less digits than its factorization.

19487228004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30297 (or 30292 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 19487228004 in words is "nineteen billion, four hundred eighty-seven million, two hundred twenty-eight thousand, four".