7229812 has 6 divisors (see below), whose sum is σ = 12652178. Its totient is φ = 3614904.

The previous prime is 7229809. The next prime is 7229813. The reversal of 7229812 is 2189227.

It can be written as a sum of positive squares in only one way, i.e., 5363856 + 1865956 = 2316^2 + 1366^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7229813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903723 + ... + 903730.

Almost surely, 2^7229812 is an apocalyptic number.

It is an amenable number.

7229812 is a deficient number, since it is larger than the sum of its proper divisors (5422366).

7229812 is a wasteful number, since it uses less digits than its factorization.

7229812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807457 (or 1807455 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 7229812 is about 2688.8309727463. The cubic root of 7229812 is about 193.3640207596.

The spelling of 7229812 in words is "seven million, two hundred twenty-nine thousand, eight hundred twelve".