3289185720 has 96 divisors (see below), whose sum is σ = 10725034320. Its totient is φ = 874229760.

The previous prime is 3289185719. The next prime is 3289185787. The reversal of 3289185720 is 275819823.

It is a happy number.

3289185720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95640 + ... + 125400.

Almost surely, 2^3289185720 is an apocalyptic number.

3289185720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3289185720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5362517160).

3289185720 is an abundant number, since it is smaller than the sum of its proper divisors (7435848600).

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

3289185720 is a wasteful number, since it uses less digits than its factorization.

3289185720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30085 (or 30078 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 3289185720 is about 57351.4229989108. The cubic root of 3289185720 is about 1487.1774742208.

The spelling of 3289185720 in words is "three billion, two hundred eighty-nine million, one hundred eighty-five thousand, seven hundred twenty".