633838212 has 72 divisors (see below), whose sum is σ = 1837809792. Its totient is φ = 180432000.

The previous prime is 633838151. The next prime is 633838237. The reversal of 633838212 is 212838336.

633838212 is a `hidden beast` number, since 63 + 383 + 8 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66337 + ... + 75287.

It is an arithmetic number, because the mean of its divisors is an integer number (25525136).

Almost surely, 2^633838212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 633838212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918904896).

633838212 is an abundant number, since it is smaller than the sum of its proper divisors (1203971580).

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

633838212 is a wasteful number, since it uses less digits than its factorization.

633838212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9244 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 633838212 is about 25176.1437078835. The cubic root of 633838212 is about 858.9992921165. Note that the first 3 decimals are identical.

The spelling of 633838212 in words is "six hundred thirty-three million, eight hundred thirty-eight thousand, two hundred twelve".