237640228 has 24 divisors (see below), whose sum is σ = 477680000. Its totient is φ = 101331648.

The previous prime is 237640211. The next prime is 237640237. The reversal of 237640228 is 822046732.

It is a junction number, because it is equal to n+sod(n) for n = 237640193 and 237640202.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15753 + ... + 26896.

Almost surely, 2^237640228 is an apocalyptic number.

237640228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

237640228 is an abundant number, since it is smaller than the sum of its proper divisors (240039772).

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

237640228 is a wasteful number, since it uses less digits than its factorization.

237640228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42859 (or 42857 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 237640228 is about 15415.5839331502. The cubic root of 237640228 is about 619.4030223219.

The spelling of 237640228 in words is "two hundred thirty-seven million, six hundred forty thousand, two hundred twenty-eight".