13820238744 has 32 divisors (see below), whose sum is σ = 37208335920. Its totient is φ = 4252381056.

The previous prime is 13820238737. The next prime is 13820238763. The reversal of 13820238744 is 44783202831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13820238696 and 13820238705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22147507 + ... + 22148130.

Almost surely, 2^13820238744 is an apocalyptic number.

It is an amenable number.

13820238744 is an abundant number, since it is smaller than the sum of its proper divisors (23388097176).

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

13820238744 is a wasteful number, since it uses less digits than its factorization.

13820238744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44295659 (or 44295655 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 13820238744 in words is "thirteen billion, eight hundred twenty million, two hundred thirty-eight thousand, seven hundred forty-four".