3640078000 has 160 divisors (see below), whose sum is σ = 9541389312. Its totient is φ = 1335168000.

The previous prime is 3640077997. The next prime is 3640078033. The reversal of 3640078000 is 8700463.

It is a self number, because there is not a number n which added to its sum of digits gives 3640078000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4965634 + ... + 4966366.

Almost surely, 2^3640078000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3640078000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4770694656).

3640078000 is an abundant number, since it is smaller than the sum of its proper divisors (5901311312).

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

3640078000 is a wasteful number, since it uses less digits than its factorization.

3640078000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 3640078000 is about 60333.0589312360. The cubic root of 3640078000 is about 1538.2853237916.

Adding to 3640078000 its reverse (8700463), we get a palindrome (3648778463).

The spelling of 3640078000 in words is "three billion, six hundred forty million, seventy-eight thousand".