6931228 has 12 divisors (see below), whose sum is σ = 12521152. Its totient is φ = 3353760.

The previous prime is 6931207. The next prime is 6931229. The reversal of 6931228 is 8221396.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 6931228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6931229) 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 in 3 ways as a sum of consecutive naturals, for example, 27825 + ... + 28072.

Almost surely, 2^6931228 is an apocalyptic number.

It is an amenable number.

6931228 is a deficient number, since it is larger than the sum of its proper divisors (5589924).

6931228 is a wasteful number, since it uses less digits than its factorization.

6931228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55932 (or 55930 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 6931228 is about 2632.7225451992. The cubic root of 6931228 is about 190.6645978117.

The spelling of 6931228 in words is "six million, nine hundred thirty-one thousand, two hundred twenty-eight".