2749401720 has 192 divisors, whose sum is σ = 9658958400. Its totient is φ = 674242560.

The previous prime is 2749401713. The next prime is 2749401727. The reversal of 2749401720 is 271049472.

It is an interprime number because it is at equal distance from previous prime (2749401713) and next prime (2749401727).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749401727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1454536 + ... + 1456424.

It is an arithmetic number, because the mean of its divisors is an integer number (50307075).

Almost surely, 2^2749401720 is an apocalyptic number.

2749401720 is a gapful number since it is divisible by the number (20) 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 2749401720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4829479200).

2749401720 is an abundant number, since it is smaller than the sum of its proper divisors (6909556680).

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

2749401720 is a wasteful number, since it uses less digits than its factorization.

2749401720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 2749401720 is about 52434.7377222391. The cubic root of 2749401720 is about 1400.9180577110.

The spelling of 2749401720 in words is "two billion, seven hundred forty-nine million, four hundred one thousand, seven hundred twenty".