13888206720 has 576 divisors, whose sum is σ = 51556789440. Its totient is φ = 3442360320.

The previous prime is 13888206707. The next prime is 13888206757. The reversal of 13888206720 is 2760288831.

It is a tau number, because it is divible by the number of its divisors (576).

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 71 ways as a sum of consecutive naturals, for example, 227675490 + ... + 227675550.

It is an arithmetic number, because the mean of its divisors is an integer number (89508315).

Almost surely, 2^13888206720 is an apocalyptic number.

13888206720 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 13888206720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25778394720).

13888206720 is an abundant number, since it is smaller than the sum of its proper divisors (37668582720).

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

13888206720 is a wasteful number, since it uses less digits than its factorization.

13888206720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 13888206720 in words is "thirteen billion, eight hundred eighty-eight million, two hundred six thousand, seven hundred twenty".