4644266220 has 240 divisors, whose sum is σ = 16099776000. Its totient is φ = 1111294080.

The previous prime is 4644266177. The next prime is 4644266239. The reversal of 4644266220 is 226624464.

4644266220 is a `hidden beast` number, since 4 + 6 + 4 + 4 + 26 + 622 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1406131 + ... + 1409429.

It is an arithmetic number, because the mean of its divisors is an integer number (67082400).

Almost surely, 2^4644266220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4644266220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8049888000).

4644266220 is an abundant number, since it is smaller than the sum of its proper divisors (11455509780).

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

4644266220 is a wasteful number, since it uses less digits than its factorization.

4644266220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410 (or 3399 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 4644266220 is about 68148.8534019465. The cubic root of 4644266220 is about 1668.4212098100.

The spelling of 4644266220 in words is "four billion, six hundred forty-four million, two hundred sixty-six thousand, two hundred twenty".