2640046500 has 576 divisors, whose sum is σ = 10735845120. Its totient is φ = 555206400.

The previous prime is 2640046483. The next prime is 2640046529. The reversal of 2640046500 is 56400462.

It is a happy number.

2640046500 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 0 + 4 + 650 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8599347 + ... + 8599653.

It is an arithmetic number, because the mean of its divisors is an integer number (18638620).

Almost surely, 2^2640046500 is an apocalyptic number.

2640046500 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 2640046500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5367922560).

2640046500 is an abundant number, since it is smaller than the sum of its proper divisors (8095798620).

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

2640046500 is a wasteful number, since it uses less digits than its factorization.

2640046500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2640046500 is about 51381.3828151793. The cubic root of 2640046500 is about 1382.0927604667.

Adding to 2640046500 its reverse (56400462), we get a palindrome (2696446962).

It can be divided in two parts, 26400 and 46500, that added together give a square (72900 = 270²).

The spelling of 2640046500 in words is "two billion, six hundred forty million, forty-six thousand, five hundred".