2721012736 has 88 divisors (see below), whose sum is σ = 5983790400. Its totient is φ = 1228849152.

The previous prime is 2721012727. The next prime is 2721012751. The reversal of 2721012736 is 6372101272.

It is a junction number, because it is equal to n+sod(n) for n = 2721012698 and 2721012707.

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, 623490 + ... + 627838.

Almost surely, 2^2721012736 is an apocalyptic number.

2721012736 is a gapful number since it is divisible by the number (26) 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 2721012736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2991895200).

2721012736 is an abundant number, since it is smaller than the sum of its proper divisors (3262777664).

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

2721012736 is a wasteful number, since it uses less digits than its factorization.

2721012736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429 (or 4411 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2721012736 is about 52163.3275012245. The cubic root of 2721012736 is about 1396.0796335555.

The spelling of 2721012736 in words is "two billion, seven hundred twenty-one million, twelve thousand, seven hundred thirty-six".