7217130 has 16 divisors (see below), whose sum is σ = 17321184. Its totient is φ = 1924560.

The previous prime is 7217123. The next prime is 7217137. The reversal of 7217130 is 317127.

It is an interprime number because it is at equal distance from previous prime (7217123) and next prime (7217137).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7217097 and 7217106.

It is not an unprimeable number, because it can be changed into a prime (7217137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120256 + ... + 120315.

It is an arithmetic number, because the mean of its divisors is an integer number (1082574).

Almost surely, 2^7217130 is an apocalyptic number.

7217130 is an abundant number, since it is smaller than the sum of its proper divisors (10104054).

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

7217130 is a wasteful number, since it uses less digits than its factorization.

7217130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240581.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 7217130 is about 2686.4716637255. The cubic root of 7217130 is about 193.2508929790.

The spelling of 7217130 in words is "seven million, two hundred seventeen thousand, one hundred thirty".