3239865820 has 36 divisors (see below), whose sum is σ = 6923213640. Its totient is φ = 1273212288.

The previous prime is 3239865799. The next prime is 3239865821. The reversal of 3239865820 is 285689323.

3239865820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3239865821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1954432 + ... + 1956088.

It is an arithmetic number, because the mean of its divisors is an integer number (192311490).

Almost surely, 2^3239865820 is an apocalyptic number.

It is an amenable number.

3239865820 is an abundant number, since it is smaller than the sum of its proper divisors (3683347820).

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

3239865820 is an equidigital number, since it uses as much as digits as its factorization.

3239865820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 3239865820 is about 56919.8192196708. The cubic root of 3239865820 is about 1479.7068173820.

The spelling of 3239865820 in words is "three billion, two hundred thirty-nine million, eight hundred sixty-five thousand, eight hundred twenty".