3240643630 has 32 divisors (see below), whose sum is σ = 6668513280. Its totient is φ = 1110736800.

The previous prime is 3240643619. The next prime is 3240643661. The reversal of 3240643630 is 363460423.

It is a super-2 number, since 2×3240643630² = 21003542273319153800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3240643592 and 3240643601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349555 + ... + 358705.

It is an arithmetic number, because the mean of its divisors is an integer number (208391040).

Almost surely, 2^3240643630 is an apocalyptic number.

3240643630 is an abundant number, since it is smaller than the sum of its proper divisors (3427869650).

3240643630 is a wasteful number, since it uses less digits than its factorization.

3240643630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14224.

The product of its (nonzero) digits is 31104, while the sum is 31.

The square root of 3240643630 is about 56926.6513155306. The cubic root of 3240643630 is about 1479.8252213255.

The spelling of 3240643630 in words is "three billion, two hundred forty million, six hundred forty-three thousand, six hundred thirty".