7220416240 has 20 divisors (see below), whose sum is σ = 16787467944. Its totient is φ = 2888166464.

The previous prime is 7220416237. The next prime is 7220416241. The reversal of 7220416240 is 426140227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 7220416199 and 7220416208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220416241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45127522 + ... + 45127681.

Almost surely, 2^7220416240 is an apocalyptic number.

It is an amenable number.

7220416240 is an abundant number, since it is smaller than the sum of its proper divisors (9567051704).

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

7220416240 is a wasteful number, since it uses less digits than its factorization.

7220416240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90255216 (or 90255210 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 7220416240 is about 84973.0324279415. The cubic root of 7220416240 is about 1932.8022007759.

Adding to 7220416240 its reverse (426140227), we get a palindrome (7646556467).

The spelling of 7220416240 in words is "seven billion, two hundred twenty million, four hundred sixteen thousand, two hundred forty".