7220187 has 36 divisors (see below), whose sum is σ = 11647584. Its totient is φ = 4305600.

The previous prime is 7220177. The next prime is 7220201. The reversal of 7220187 is 7810227.

It is not a de Polignac number, because 7220187 - 2⁶ = 7220123 is a prime.

It is a super-2 number, since 2×7220187² = 104262200629938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7220187.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71437 + ... + 71537.

It is an arithmetic number, because the mean of its divisors is an integer number (323544).

Almost surely, 2^7220187 is an apocalyptic number.

7220187 is a deficient number, since it is larger than the sum of its proper divisors (4427397).

7220187 is a wasteful number, since it uses less digits than its factorization.

7220187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 7220187 is about 2687.0405653804. The cubic root of 7220187 is about 193.2781745803.

The spelling of 7220187 in words is "seven million, two hundred twenty thousand, one hundred eighty-seven".