7427220 has 24 divisors (see below), whose sum is σ = 20796384. Its totient is φ = 1980576.

The previous prime is 7427209. The next prime is 7427221. The reversal of 7427220 is 227247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7427221) 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, 61834 + ... + 61953.

It is an arithmetic number, because the mean of its divisors is an integer number (866516).

Almost surely, 2^7427220 is an apocalyptic number.

It is an amenable number.

7427220 is an abundant number, since it is smaller than the sum of its proper divisors (13369164).

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

7427220 is a wasteful number, since it uses less digits than its factorization.

7427220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123799 (or 123797 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7427220 is about 2725.2926448365. The cubic root of 7427220 is about 195.1081582755.

The spelling of 7427220 in words is "seven million, four hundred twenty-seven thousand, two hundred twenty".