4021771360 has 96 divisors (see below), whose sum is σ = 9839999232. Its totient is φ = 1551728640.

The previous prime is 4021771349. The next prime is 4021771393. The reversal of 4021771360 is 631771204.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749732 + ... + 1752028.

It is an arithmetic number, because the mean of its divisors is an integer number (102499992).

Almost surely, 2^4021771360 is an apocalyptic number.

4021771360 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 4021771360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4919999616).

4021771360 is an abundant number, since it is smaller than the sum of its proper divisors (5818227872).

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

4021771360 is a wasteful number, since it uses less digits than its factorization.

4021771360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696 (or 2688 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 4021771360 is about 63417.4373496754. The cubic root of 4021771360 is about 1590.2758325831.

The spelling of 4021771360 in words is "four billion, twenty-one million, seven hundred seventy-one thousand, three hundred sixty".