212458938 has 16 divisors (see below), whose sum is σ = 425076960. Its totient is φ = 70793136.

The previous prime is 212458937. The next prime is 212458949. The reversal of 212458938 is 839854212.

212458938 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212458938.

It is not an unprimeable number, because it can be changed into a prime (212458933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17481 + ... + 27027.

It is an arithmetic number, because the mean of its divisors is an integer number (26567310).

Almost surely, 2^212458938 is an apocalyptic number.

212458938 is an abundant number, since it is smaller than the sum of its proper divisors (212618022).

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

212458938 is a wasteful number, since it uses less digits than its factorization.

212458938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261.

The product of its digits is 138240, while the sum is 42.

The square root of 212458938 is about 14575.9712540880. The cubic root of 212458938 is about 596.7031567764.

The spelling of 212458938 in words is "two hundred twelve million, four hundred fifty-eight thousand, nine hundred thirty-eight".