7307228 has 6 divisors (see below), whose sum is σ = 12787656. Its totient is φ = 3653612.

The previous prime is 7307219. The next prime is 7307239. The reversal of 7307228 is 8227037.

It is a self number, because there is not a number n which added to its sum of digits gives 7307228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913400 + ... + 913407.

It is an arithmetic number, because the mean of its divisors is an integer number (2131276).

Almost surely, 2^7307228 is an apocalyptic number.

It is an amenable number.

7307228 is a deficient number, since it is larger than the sum of its proper divisors (5480428).

7307228 is a wasteful number, since it uses less digits than its factorization.

7307228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826811 (or 1826809 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 7307228 is about 2703.1884876937. The cubic root of 7307228 is about 194.0517451511.

The spelling of 7307228 in words is "seven million, three hundred seven thousand, two hundred twenty-eight".