7222992 has 120 divisors (see below), whose sum is σ = 22561056. Its totient is φ = 1983744.

The previous prime is 7222991. The next prime is 7223017. The reversal of 7222992 is 2992227.

7222992 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7222992² = 104343226864128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86983 + ... + 87065.

Almost surely, 2^7222992 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 7222992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11280528).

7222992 is an abundant number, since it is smaller than the sum of its proper divisors (15338064).

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

7222992 is a wasteful number, since it uses less digits than its factorization.

7222992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 132 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 7222992 is about 2687.5624643904. The cubic root of 7222992 is about 193.3032004828.

The spelling of 7222992 in words is "seven million, two hundred twenty-two thousand, nine hundred ninety-two".