3204981780 has 768 divisors, whose sum is σ = 13233217536. Its totient is φ = 557383680.

The previous prime is 3204981743. The next prime is 3204981781. The reversal of 3204981780 is 871894023.

3204981780 = 4663² + 4664² + ... + 4805².

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3204981781) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 43903824 + ... + 43903896.

It is an arithmetic number, because the mean of its divisors is an integer number (17230752).

Almost surely, 2^3204981780 is an apocalyptic number.

3204981780 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 3204981780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6616608768).

3204981780 is an abundant number, since it is smaller than the sum of its proper divisors (10028235756).

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

3204981780 is a wasteful number, since it uses less digits than its factorization.

3204981780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 3204981780 is about 56612.5585007426. The cubic root of 3204981780 is about 1474.3769127323.

The spelling of 3204981780 in words is "three billion, two hundred four million, nine hundred eighty-one thousand, seven hundred eighty".