2749817240 has 16 divisors (see below), whose sum is σ = 6187088880. Its totient is φ = 1099926880.

The previous prime is 2749817221. The next prime is 2749817243. The reversal of 2749817240 is 427189472.

2749817240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2749817240² = 15122989706802435200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2749817191 and 2749817200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749817243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34372676 + ... + 34372755.

It is an arithmetic number, because the mean of its divisors is an integer number (386693055).

Almost surely, 2^2749817240 is an apocalyptic number.

2749817240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2749817240 is an abundant number, since it is smaller than the sum of its proper divisors (3437271640).

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

2749817240 is a wasteful number, since it uses less digits than its factorization.

2749817240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68745442 (or 68745438 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 2749817240 is about 52438.6998313269. The cubic root of 2749817240 is about 1400.9886282336.

The spelling of 2749817240 in words is "two billion, seven hundred forty-nine million, eight hundred seventeen thousand, two hundred forty".