13870443720 has 96 divisors (see below), whose sum is σ = 48405038400. Its totient is φ = 3170385792.

The previous prime is 13870443689. The next prime is 13870443721. The reversal of 13870443720 is 2734407831.

It is a super-3 number, since 3×13870443720³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13870443721) 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, 1173580 + ... + 1185339.

It is an arithmetic number, because the mean of its divisors is an integer number (504219150).

Almost surely, 2^13870443720 is an apocalyptic number.

13870443720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13870443720 is an abundant number, since it is smaller than the sum of its proper divisors (34534594680).

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

13870443720 is a wasteful number, since it uses less digits than its factorization.

13870443720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358947 (or 2358936 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 13870443720 in words is "thirteen billion, eight hundred seventy million, four hundred forty-three thousand, seven hundred twenty".