4722779520 has 640 divisors, whose sum is σ = 18714421440. Its totient is φ = 1128923136.

The previous prime is 4722779513. The next prime is 4722779521. The reversal of 4722779520 is 259772274.

4722779520 is a `hidden beast` number, since 472 + 2 + 77 + 95 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4722779521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20269324 + ... + 20269556.

Almost surely, 2^4722779520 is an apocalyptic number.

4722779520 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 4722779520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9357210720).

4722779520 is an abundant number, since it is smaller than the sum of its proper divisors (13991641920).

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

4722779520 is a wasteful number, since it uses less digits than its factorization.

4722779520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 4722779520 is about 68722.4819109438. The cubic root of 4722779520 is about 1677.7705119961.

The spelling of 4722779520 in words is "four billion, seven hundred twenty-two million, seven hundred seventy-nine thousand, five hundred twenty".