13946238720 has 144 divisors (see below), whose sum is σ = 49489900320. Its totient is φ = 3718987776.

The previous prime is 13946238689. The next prime is 13946238721. The reversal of 13946238720 is 2783264931.

13946238720 is a `hidden beast` number, since 1 + 394 + 6 + 238 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13946238721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167209 + ... + 236328.

Almost surely, 2^13946238720 is an apocalyptic number.

13946238720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13946238720 is an abundant number, since it is smaller than the sum of its proper divisors (35543661600).

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

13946238720 is an equidigital number, since it uses as much as digits as its factorization.

13946238720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403567 (or 403547 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 13946238720 in words is "thirteen billion, nine hundred forty-six million, two hundred thirty-eight thousand, seven hundred twenty".