4021490320 has 80 divisors (see below), whose sum is σ = 9696098160. Its totient is φ = 1549320192.

The previous prime is 4021490309. The next prime is 4021490323. The reversal of 4021490320 is 230941204.

4021490320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2944656 + 4018545664 = 1716^2 + 63392^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (4021490323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058344 + ... + 1062136.

It is an arithmetic number, because the mean of its divisors is an integer number (121201227).

Almost surely, 2^4021490320 is an apocalyptic number.

4021490320 is a gapful number since it is divisible by the number (40) 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 4021490320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4848049080).

4021490320 is an abundant number, since it is smaller than the sum of its proper divisors (5674607840).

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

4021490320 is a wasteful number, since it uses less digits than its factorization.

4021490320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4021490320 is about 63415.2215166044. The cubic root of 4021490320 is about 1590.2387890774.

The spelling of 4021490320 in words is "four billion, twenty-one million, four hundred ninety thousand, three hundred twenty".