3821064240 has 160 divisors (see below), whose sum is σ = 13644840960. Its totient is φ = 866460672.

The previous prime is 3821064209. The next prime is 3821064251. The reversal of 3821064240 is 424601283.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3821064198 and 3821064207.

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, 204406 + ... + 222314.

It is an arithmetic number, because the mean of its divisors is an integer number (85280256).

Almost surely, 2^3821064240 is an apocalyptic number.

3821064240 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 3821064240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6822420480).

3821064240 is an abundant number, since it is smaller than the sum of its proper divisors (9823776720).

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

3821064240 is a wasteful number, since it uses less digits than its factorization.

3821064240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18059 (or 18053 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 3821064240 is about 61814.7574613053. The cubic root of 3821064240 is about 1563.3688210411.

The spelling of 3821064240 in words is "three billion, eight hundred twenty-one million, sixty-four thousand, two hundred forty".