247690228 has 6 divisors (see below), whose sum is σ = 433457906. Its totient is φ = 123845112.

The previous prime is 247690207. The next prime is 247690231. The reversal of 247690228 is 822096742.

247690228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 211353444 + 36336784 = 14538^2 + 6028^2 .

It is a super-2 number, since 2×247690228² = 122700898093383968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30961275 + ... + 30961282.

Almost surely, 2^247690228 is an apocalyptic number.

It is an amenable number.

247690228 is a deficient number, since it is larger than the sum of its proper divisors (185767678).

247690228 is a wasteful number, since it uses less digits than its factorization.

247690228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61922561 (or 61922559 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 247690228 is about 15738.1774040071. The cubic root of 247690228 is about 628.0144323025.

The spelling of 247690228 in words is "two hundred forty-seven million, six hundred ninety thousand, two hundred twenty-eight".