3388721720 has 16 divisors (see below), whose sum is σ = 7624623960. Its totient is φ = 1355488672.

The previous prime is 3388721711. The next prime is 3388721723. The reversal of 3388721720 is 271278833.

It is a super-2 number, since 2×3388721720² = 22966869791199516800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3388721723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42358982 + ... + 42359061.

Almost surely, 2^3388721720 is an apocalyptic number.

It is an amenable number.

3388721720 is an abundant number, since it is smaller than the sum of its proper divisors (4235902240).

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

3388721720 is a wasteful number, since it uses less digits than its factorization.

3388721720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84718054 (or 84718050 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 3388721720 is about 58212.7281614597. The cubic root of 3388721720 is about 1502.0300986343.

The spelling of 3388721720 in words is "three billion, three hundred eighty-eight million, seven hundred twenty-one thousand, seven hundred twenty".