8724721572 has 384 divisors, whose sum is σ = 28764288000. Its totient is φ = 2265242112.

The previous prime is 8724721571. The next prime is 8724721627. The reversal of 8724721572 is 2751274278.

8724721572 is a `hidden beast` number, since 8 + 7 + 2 + 4 + 72 + 1 + 572 = 666.

It is a super-2 number, since 2×8724721572² (a number of 21 digits) contains 22 as substring.

Its product of digits (439040) is a multiple of the sum of its prime factors (112).

It is not an unprimeable number, because it can be changed into a prime (8724721571) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 300852454 + ... + 300852482.

It is an arithmetic number, because the mean of its divisors is an integer number (74907000).

Almost surely, 2^8724721572 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 8724721572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14382144000).

8724721572 is an abundant number, since it is smaller than the sum of its proper divisors (20039566428).

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

8724721572 is an equidigital number, since it uses as much as digits as its factorization.

8724721572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 58 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 8724721572 is about 93406.2180585425. The cubic root of 8724721572 is about 2058.6563623093.

The spelling of 8724721572 in words is "eight billion, seven hundred twenty-four million, seven hundred twenty-one thousand, five hundred seventy-two".