7220002572 has 36 divisors (see below), whose sum is σ = 18638876256. Its totient is φ = 2355461280.

The previous prime is 7220002549. The next prime is 7220002583. The reversal of 7220002572 is 2752000227.

It is a happy number.

7220002572 is a `hidden beast` number, since 72 + 20 + 0 + 0 + 2 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2131879 + ... + 2135262.

Almost surely, 2^7220002572 is an apocalyptic number.

It is an amenable number.

7220002572 is an abundant number, since it is smaller than the sum of its proper divisors (11418873684).

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

7220002572 is a wasteful number, since it uses less digits than its factorization.

7220002572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267198 (or 4267193 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 7220002572 is about 84970.5982796402. The cubic root of 7220002572 is about 1932.7652890678.

Adding to 7220002572 its reverse (2752000227), we get a palindrome (9972002799).

The spelling of 7220002572 in words is "seven billion, two hundred twenty million, two thousand, five hundred seventy-two".