7220992 has 36 divisors (see below), whose sum is σ = 14663656. Its totient is φ = 3548160.

The previous prime is 7220981. The next prime is 7220999. The reversal of 7220992 is 2990227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16942 + ... + 17362.

Almost surely, 2^7220992 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 7220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7331828).

7220992 is an abundant number, since it is smaller than the sum of its proper divisors (7442664).

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

7220992 is an equidigital number, since it uses as much as digits as its factorization.

7220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7220992 is about 2687.1903542548. The cubic root of 7220992 is about 193.2853573651.

The spelling of 7220992 in words is "seven million, two hundred twenty thousand, nine hundred ninety-two".