19026940240 has 240 divisors, whose sum is σ = 55861174656. Its totient is φ = 5899576320.

The previous prime is 19026940217. The next prime is 19026940249. The reversal of 19026940240 is 4204962091.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19026940240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19026940249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15380902 + ... + 15382138.

Almost surely, 2^19026940240 is an apocalyptic number.

19026940240 is a gapful number since it is divisible by the number (10) 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 19026940240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27930587328).

19026940240 is an abundant number, since it is smaller than the sum of its proper divisors (36834234416).

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

19026940240 is a wasteful number, since it uses less digits than its factorization.

19026940240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 19026940240 in words is "nineteen billion, twenty-six million, nine hundred forty thousand, two hundred forty".