4021947360 has 576 divisors, whose sum is σ = 15461409600. Its totient is φ = 947552256.

The previous prime is 4021947353. The next prime is 4021947383. The reversal of 4021947360 is 637491204.

4021947360 is a `hidden beast` number, since 40 + 219 + 47 + 360 = 666.

It is a super-2 number, since 2×4021947360² = 32352121133221939200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29357212 + ... + 29357348.

It is an arithmetic number, because the mean of its divisors is an integer number (26842725).

Almost surely, 2^4021947360 is an apocalyptic number.

4021947360 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 4021947360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7730704800).

4021947360 is an abundant number, since it is smaller than the sum of its proper divisors (11439462240).

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

4021947360 is a wasteful number, since it uses less digits than its factorization.

4021947360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 4021947360 is about 63418.8249654627. The cubic root of 4021947360 is about 1590.2990300285.

The spelling of 4021947360 in words is "four billion, twenty-one million, nine hundred forty-seven thousand, three hundred sixty".