7221492 has 18 divisors (see below), whose sum is σ = 18254418. Its totient is φ = 2407152.

The previous prime is 7221457. The next prime is 7221499. The reversal of 7221492 is 2941227.

It can be written as a sum of positive squares in only one way, i.e., 7160976 + 60516 = 2676^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100263 + ... + 100334.

Almost surely, 2^7221492 is an apocalyptic number.

It is an amenable number.

7221492 is an abundant number, since it is smaller than the sum of its proper divisors (11032926).

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

7221492 is a wasteful number, since it uses less digits than its factorization.

7221492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200607 (or 200602 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7221492 is about 2687.2833866193. The cubic root of 7221492 is about 193.2898184533.

The spelling of 7221492 in words is "seven million, two hundred twenty-one thousand, four hundred ninety-two".