7217098240 has 240 divisors, whose sum is σ = 19866790944. Its totient is φ = 2507816960.

The previous prime is 7217098223. The next prime is 7217098261. The reversal of 7217098240 is 428907127.

It is a super-2 number, since 2×7217098240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7217098193 and 7217098202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7123974 + ... + 7124986.

Almost surely, 2^7217098240 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 7217098240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9933395472).

7217098240 is an abundant number, since it is smaller than the sum of its proper divisors (12649692704).

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

7217098240 is a wasteful number, since it uses less digits than its factorization.

7217098240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 7217098240 is about 84953.5063431757. The cubic root of 7217098240 is about 1932.5060950267.

The spelling of 7217098240 in words is "seven billion, two hundred seventeen million, ninety-eight thousand, two hundred forty".