212444454 has 32 divisors (see below), whose sum is σ = 442383840. Its totient is φ = 67951872.

The previous prime is 212444437. The next prime is 212444473. The reversal of 212444454 is 454444212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9652 + ... + 22760.

It is an arithmetic number, because the mean of its divisors is an integer number (13824495).

Almost surely, 2^212444454 is an apocalyptic number.

212444454 is an abundant number, since it is smaller than the sum of its proper divisors (229939386).

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

212444454 is a wasteful number, since it uses less digits than its factorization.

212444454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224.

The product of its digits is 20480, while the sum is 30.

The square root of 212444454 is about 14575.4744005127. The cubic root of 212444454 is about 596.6895967524.

Adding to 212444454 its reverse (454444212), we get a palindrome (666888666).

The spelling of 212444454 in words is "two hundred twelve million, four hundred forty-four thousand, four hundred fifty-four".