4247478720 has 336 divisors, whose sum is σ = 15042062880. Its totient is φ = 1099726848.

The previous prime is 4247478619. The next prime is 4247478721. The reversal of 4247478720 is 278747424.

4247478720 is a `hidden beast` number, since 42 + 474 + 78 + 72 + 0 = 666.

4247478720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (4247478721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18711247 + ... + 18711473.

Almost surely, 2^4247478720 is an apocalyptic number.

4247478720 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 4247478720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7521031440).

4247478720 is an abundant number, since it is smaller than the sum of its proper divisors (10794584160).

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

4247478720 is a wasteful number, since it uses less digits than its factorization.

4247478720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 45.

The square root of 4247478720 is about 65172.6838483732. The cubic root of 4247478720 is about 1619.4855247889.

The spelling of 4247478720 in words is "four billion, two hundred forty-seven million, four hundred seventy-eight thousand, seven hundred twenty".