7222312 has 8 divisors (see below), whose sum is σ = 13541850. Its totient is φ = 3611152.

The previous prime is 7222291. The next prime is 7222321. The reversal of 7222312 is 2132227.

It can be written as a sum of positive squares in only one way, i.e., 3740356 + 3481956 = 1934^2 + 1866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 7222312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451387 + ... + 451402.

Almost surely, 2^7222312 is an apocalyptic number.

It is an amenable number.

7222312 is a deficient number, since it is larger than the sum of its proper divisors (6319538).

7222312 is a wasteful number, since it uses less digits than its factorization.

7222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902795 (or 902791 counting only the distinct ones).

The product of its digits is 336, while the sum is 19.

The square root of 7222312 is about 2687.4359527252. The cubic root of 7222312 is about 193.2971341924.

Adding to 7222312 its reverse (2132227), we get a palindrome (9354539).

It can be divided in two parts, 722 and 2312, that multiplied together give a square (1669264 = 1292²).

The spelling of 7222312 in words is "seven million, two hundred twenty-two thousand, three hundred twelve".