13489428736 has 243 divisors, whose sum is σ = 33827544387. Its totient is φ = 5351915520.

The previous prime is 13489428731. The next prime is 13489428761. The reversal of 13489428736 is 63782498431.

The square root of 13489428736 is 116144.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1244678400 + 12244750336 = 35280^2 + 110656^2 .

It is not an unprimeable number, because it can be changed into a prime (13489428731) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 221138146 + ... + 221138206.

Almost surely, 2^13489428736 is an apocalyptic number.

13489428736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

13489428736 is the 116144-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13489428736

13489428736 is an abundant number, since it is smaller than the sum of its proper divisors (20338115651).

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

13489428736 is an frugal number, since it uses more digits than its factorization.

13489428736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 87 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

It can be divided in two parts, 13489 and 428736, that added together give a square (442225 = 665²).

The spelling of 13489428736 in words is "thirteen billion, four hundred eighty-nine million, four hundred twenty-eight thousand, seven hundred thirty-six".