2709258240 has 304 divisors, whose sum is σ = 9512663328. Its totient is φ = 654311424.

The previous prime is 2709258221. The next prime is 2709258247. The reversal of 2709258240 is 428529072.

It is a super-2 number, since 2×2709258240² = 14680160422015795200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2709258247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51118054 + ... + 51118106.

Almost surely, 2^2709258240 is an apocalyptic number.

2709258240 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 2709258240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4756331664).

2709258240 is an abundant number, since it is smaller than the sum of its proper divisors (6803405088).

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

2709258240 is an frugal number, since it uses more digits than its factorization.

2709258240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2709258240 is about 52050.5354439318. The cubic root of 2709258240 is about 1394.0664248617.

The spelling of 2709258240 in words is "two billion, seven hundred nine million, two hundred fifty-eight thousand, two hundred forty".