13393923840 has 432 divisors, whose sum is σ = 53224778880. Its totient is φ = 3075563520.

The previous prime is 13393923827. The next prime is 13393923871. The reversal of 13393923840 is 4832939331.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2404899 + ... + 2410461.

Almost surely, 2^13393923840 is an apocalyptic number.

13393923840 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 13393923840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26612389440).

13393923840 is an abundant number, since it is smaller than the sum of its proper divisors (39830855040).

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

13393923840 is a wasteful number, since it uses less digits than its factorization.

13393923840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620 (or 5603 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 13393923840 in words is "thirteen billion, three hundred ninety-three million, nine hundred twenty-three thousand, eight hundred forty".