212436234 has 24 divisors (see below), whose sum is σ = 480291552. Its totient is φ = 67733160.

The previous prime is 212436157. The next prime is 212436239. The reversal of 212436234 is 432634212.

It is a super-2 number, since 2×212436234² = 90258307032205512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 212436198 and 212436207.

It is not an unprimeable number, because it can be changed into a prime (212436239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 256152 + ... + 256979.

It is an arithmetic number, because the mean of its divisors is an integer number (20012148).

Almost surely, 2^212436234 is an apocalyptic number.

212436234 is an abundant number, since it is smaller than the sum of its proper divisors (267855318).

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

212436234 is a wasteful number, since it uses less digits than its factorization.

212436234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513162 (or 513159 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 212436234 is about 14575.1924172547. The cubic root of 212436234 is about 596.6819008556.

The spelling of 212436234 in words is "two hundred twelve million, four hundred thirty-six thousand, two hundred thirty-four".