3243257140 has 96 divisors (see below), whose sum is σ = 7330901760. Its totient is φ = 1202420736.

The previous prime is 3243257119. The next prime is 3243257179. The reversal of 3243257140 is 417523423.

It is a happy number.

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, 1980402 + ... + 1982038.

It is an arithmetic number, because the mean of its divisors is an integer number (76363560).

Almost surely, 2^3243257140 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 3243257140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3665450880).

3243257140 is an abundant number, since it is smaller than the sum of its proper divisors (4087644620).

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

3243257140 is a wasteful number, since it uses less digits than its factorization.

3243257140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 3243257140 is about 56949.6017545338. The cubic root of 3243257140 is about 1480.2229302609. Note that the first 3 decimals are identical.

The spelling of 3243257140 in words is "three billion, two hundred forty-three million, two hundred fifty-seven thousand, one hundred forty".