2801011720 has 32 divisors (see below), whose sum is σ = 6787068120. Its totient is φ = 1034219520.

The previous prime is 2801011709. The next prime is 2801011721. The reversal of 2801011720 is 271101082.

It can be written as a sum of positive squares in 4 ways, for example, as 2149435044 + 651576676 = 46362^2 + 25526^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2801011691 and 2801011700.

It is not an unprimeable number, because it can be changed into a prime (2801011721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692761 + ... + 2693800.

Almost surely, 2^2801011720 is an apocalyptic number.

2801011720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2801011720 is an abundant number, since it is smaller than the sum of its proper divisors (3986056400).

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

2801011720 is a wasteful number, since it uses less digits than its factorization.

2801011720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386585 (or 5386581 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 2801011720 is about 52924.5852133014. The cubic root of 2801011720 is about 1409.6294853297.

The spelling of 2801011720 in words is "two billion, eight hundred one million, eleven thousand, seven hundred twenty".