2704512640 has 64 divisors (see below), whose sum is σ = 6480149760. Its totient is φ = 1079350272.

The previous prime is 2704512637. The next prime is 2704512641. The reversal of 2704512640 is 462154072.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (2704512641) 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, 291757 + ... + 300883.

It is an arithmetic number, because the mean of its divisors is an integer number (101252340).

Almost surely, 2^2704512640 is an apocalyptic number.

2704512640 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 2704512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240074880).

2704512640 is an abundant number, since it is smaller than the sum of its proper divisors (3775637120).

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

2704512640 is an equidigital number, since it uses as much as digits as its factorization.

2704512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609 (or 9597 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2704512640 is about 52004.9289971633. The cubic root of 2704512640 is about 1393.2519893803.

The spelling of 2704512640 in words is "two billion, seven hundred four million, five hundred twelve thousand, six hundred forty".