7228994 has 4 divisors (see below), whose sum is σ = 10843494. Its totient is φ = 3614496.

The previous prime is 7228981. The next prime is 7228999. The reversal of 7228994 is 4998227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4998227 = 13 ⋅384479.

It can be written as a sum of positive squares in only one way, i.e., 7219969 + 9025 = 2687^2 + 95^2 .

It is a super-3 number, since 3×7228994³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7228999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1807247 + ... + 1807250.

Almost surely, 2^7228994 is an apocalyptic number.

7228994 is a deficient number, since it is larger than the sum of its proper divisors (3614500).

7228994 is a wasteful number, since it uses less digits than its factorization.

7228994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614499.

The product of its digits is 72576, while the sum is 41.

The square root of 7228994 is about 2688.6788577292. The cubic root of 7228994 is about 193.3567279128.

The spelling of 7228994 in words is "seven million, two hundred twenty-eight thousand, nine hundred ninety-four".