2749812240 has 320 divisors, whose sum is σ = 10325053440. Its totient is φ = 591390720.

The previous prime is 2749812217. The next prime is 2749812347. The reversal of 2749812240 is 422189472.

It is a happy number.

It is a super-2 number, since 2×2749812240² = 15122934710507635200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8841685 + ... + 8841995.

It is an arithmetic number, because the mean of its divisors is an integer number (32265792).

Almost surely, 2^2749812240 is an apocalyptic number.

2749812240 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 2749812240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5162526720).

2749812240 is an abundant number, since it is smaller than the sum of its proper divisors (7575241200).

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

2749812240 is a wasteful number, since it uses less digits than its factorization.

2749812240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 2749812240 is about 52438.6521565915. The cubic root of 2749812240 is about 1400.9877790926.

The spelling of 2749812240 in words is "two billion, seven hundred forty-nine million, eight hundred twelve thousand, two hundred forty".