3240630720 has 224 divisors, whose sum is σ = 11509857600. Its totient is φ = 858304512.

The previous prime is 3240630719. The next prime is 3240630749. The reversal of 3240630720 is 270360423.

3240630720 is a `hidden beast` number, since 3 + 2 + 4 + 0 + 630 + 7 + 20 = 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 31 ways as a sum of consecutive naturals, for example, 1355286 + ... + 1357674.

Almost surely, 2^3240630720 is an apocalyptic number.

3240630720 is a gapful number since it is divisible by the number (30) 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 3240630720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5754928800).

3240630720 is an abundant number, since it is smaller than the sum of its proper divisors (8269226880).

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

3240630720 is a wasteful number, since it uses less digits than its factorization.

3240630720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 3240630720 is about 56926.5379238892. The cubic root of 3240630720 is about 1479.8232562252.

The spelling of 3240630720 in words is "three billion, two hundred forty million, six hundred thirty thousand, seven hundred twenty".