307228 has 12 divisors (see below), whose sum is σ = 544320. Its totient is φ = 151712.

The previous prime is 307201. The next prime is 307243. The reversal of 307228 is 822703.

It is a happy number.

307228 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is a junction number, because it is equal to n+sod(n) for n = 307199 and 307208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76 + ... + 787.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2³⁰⁷²²⁸ is an apocalyptic number.

It is an amenable number.

307228 is a deficient number, since it is larger than the sum of its proper divisors (237092).

307228 is a wasteful number, since it uses less digits than its factorization.

307228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 307228 is about 554.2815169208. The cubic root of 307228 is about 67.4766631718.

It can be divided in two parts, 307 and 228, that multiplied together give a palindrome (69996).

The spelling of 307228 in words is "three hundred seven thousand, two hundred twenty-eight".