237821996 has 12 divisors (see below), whose sum is σ = 418007520. Its totient is φ = 118391280.

The previous prime is 237821963. The next prime is 237822019. The reversal of 237821996 is 699128732.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 237821996.

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, 128900 + ... + 130731.

It is an arithmetic number, because the mean of its divisors is an integer number (34833960).

Almost surely, 2^237821996 is an apocalyptic number.

It is an amenable number.

237821996 is a deficient number, since it is larger than the sum of its proper divisors (180185524).

237821996 is a wasteful number, since it uses less digits than its factorization.

237821996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259864 (or 259862 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 237821996 is about 15421.4783986491. The cubic root of 237821996 is about 619.5609065826.

The spelling of 237821996 in words is "two hundred thirty-seven million, eight hundred twenty-one thousand, nine hundred ninety-six".