212057238 has 8 divisors (see below), whose sum is σ = 424114488. Its totient is φ = 70685744.

The previous prime is 212057227. The next prime is 212057243. The reversal of 212057238 is 832750212.

It is a sphenic number, since it is the product of 3 distinct primes.

212057238 is an admirable number.

It is a congruent number.

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, 17671431 + ... + 17671442.

It is an arithmetic number, because the mean of its divisors is an integer number (53014311).

Almost surely, 2^212057238 is an apocalyptic number.

212057238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212057238 is a wasteful number, since it uses less digits than its factorization.

212057238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35342878.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 212057238 is about 14562.1852068980. The cubic root of 212057238 is about 596.3268536582.

The spelling of 212057238 in words is "two hundred twelve million, fifty-seven thousand, two hundred thirty-eight".