2640256300 has 108 divisors (see below), whose sum is σ = 6356577528. Its totient is φ = 951104000.

The previous prime is 2640256277. The next prime is 2640256301. The reversal of 2640256300 is 36520462.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2640256301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1366335 + ... + 1368265.

Almost surely, 2^2640256300 is an apocalyptic number.

2640256300 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 2640256300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3178288764).

2640256300 is an abundant number, since it is smaller than the sum of its proper divisors (3716321228).

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

2640256300 is a wasteful number, since it uses less digits than its factorization.

2640256300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2640256300 is about 51383.4243701215. The cubic root of 2640256300 is about 1382.1293703497.

Adding to 2640256300 its reverse (36520462), we get a palindrome (2676776762).

The spelling of 2640256300 in words is "two billion, six hundred forty million, two hundred fifty-six thousand, three hundred".