7212522240 has 864 divisors, whose sum is σ = 31957825536. Its totient is φ = 1458339840.

The previous prime is 7212522199. The next prime is 7212522241. The reversal of 7212522240 is 422252127.

It is not an unprimeable number, because it can be changed into a prime (7212522241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41690794 + ... + 41690966.

It is an arithmetic number, because the mean of its divisors is an integer number (36988224).

Almost surely, 2^7212522240 is an apocalyptic number.

7212522240 is a gapful number since it is divisible by the number (70) 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 7212522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15978912768).

7212522240 is an abundant number, since it is smaller than the sum of its proper divisors (24745303296).

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

7212522240 is a wasteful number, since it uses less digits than its factorization.

7212522240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 7212522240 is about 84926.5696940598. The cubic root of 7212522240 is about 1932.0975736120.

Adding to 7212522240 its reverse (422252127), we get a palindrome (7634774367).

The spelling of 7212522240 in words is "seven billion, two hundred twelve million, five hundred twenty-two thousand, two hundred forty".