4260987640 has 128 divisors (see below), whose sum is σ = 11823154560. Its totient is φ = 1345849344.

The previous prime is 4260987637. The next prime is 4260987649. The reversal of 4260987640 is 467890624.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4260987649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2667322 + ... + 2668918.

It is an arithmetic number, because the mean of its divisors is an integer number (92368395).

Almost surely, 2^4260987640 is an apocalyptic number.

4260987640 is a gapful number since it is divisible by the number (40) 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 4260987640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5911577280).

4260987640 is an abundant number, since it is smaller than the sum of its proper divisors (7562166920).

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

4260987640 is a wasteful number, since it uses less digits than its factorization.

4260987640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 4260987640 is about 65276.2410069698. The cubic root of 4260987640 is about 1621.2006087445.

The spelling of 4260987640 in words is "four billion, two hundred sixty million, nine hundred eighty-seven thousand, six hundred forty".