3240771840 has 108 divisors (see below), whose sum is σ = 11212772844. Its totient is φ = 864202752.

The previous prime is 3240771839. The next prime is 3240771857. The reversal of 3240771840 is 481770423.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1676411136 + 1564360704 = 40944^2 + 39552^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3240771795 and 3240771804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129139 + ... + 152178.

Almost surely, 2^3240771840 is an apocalyptic number.

3240771840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3240771840 is an abundant number, since it is smaller than the sum of its proper divisors (7972001004).

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

3240771840 is a wasteful number, since it uses less digits than its factorization.

3240771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281344 (or 281327 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 3240771840 is about 56927.7774026002. Note that the first 3 decimals coincide. The cubic root of 3240771840 is about 1479.8447365732.

The spelling of 3240771840 in words is "three billion, two hundred forty million, seven hundred seventy-one thousand, eight hundred forty".