7215000072 has 32 divisors (see below), whose sum is σ = 20614286400. Its totient is φ = 2061428544.

The previous prime is 7215000059. The next prime is 7215000097. The reversal of 7215000072 is 2700005127.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21473047 + ... + 21473382.

It is an arithmetic number, because the mean of its divisors is an integer number (644196450).

Almost surely, 2^7215000072 is an apocalyptic number.

It is an amenable number.

7215000072 is an abundant number, since it is smaller than the sum of its proper divisors (13399286328).

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

7215000072 is a wasteful number, since it uses less digits than its factorization.

7215000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42946445 (or 42946441 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 7215000072 is about 84941.1565261505. The cubic root of 7215000072 is about 1932.3188029734.

Adding to 7215000072 its reverse (2700005127), we get a palindrome (9915005199).

The spelling of 7215000072 in words is "seven billion, two hundred fifteen million, seventy-two", and thus it is an aban number.