690273228 has 12 divisors (see below), whose sum is σ = 1610637560. Its totient is φ = 230091072.

The previous prime is 690273203. The next prime is 690273247. The reversal of 690273228 is 822372096.

690273228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28761373 + ... + 28761396.

Almost surely, 2^690273228 is an apocalyptic number.

It is an amenable number.

690273228 is an abundant number, since it is smaller than the sum of its proper divisors (920364332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690273228 is a wasteful number, since it uses less digits than its factorization.

690273228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57522776 (or 57522774 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 690273228 is about 26273.0513644685. The cubic root of 690273228 is about 883.7722142638.

The spelling of 690273228 in words is "six hundred ninety million, two hundred seventy-three thousand, two hundred twenty-eight".