2215489572 has 72 divisors (see below), whose sum is σ = 6055934976. Its totient is φ = 680258304.

The previous prime is 2215489543. The next prime is 2215489579. The reversal of 2215489572 is 2759845122.

2215489572 is a `hidden beast` number, since 2 + 21 + 54 + 8 + 9 + 572 = 666.

It is not an unprimeable number, because it can be changed into a prime (2215489579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9748 + ... + 67275.

It is an arithmetic number, because the mean of its divisors is an integer number (84110208).

Almost surely, 2^2215489572 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 2215489572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027967488).

2215489572 is an abundant number, since it is smaller than the sum of its proper divisors (3840445404).

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

2215489572 is a wasteful number, since it uses less digits than its factorization.

2215489572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77097 (or 77092 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2215489572 is about 47068.9873696046. The cubic root of 2215489572 is about 1303.6366755048.

The spelling of 2215489572 in words is "two billion, two hundred fifteen million, four hundred eighty-nine thousand, five hundred seventy-two".