212232456 has 24 divisors (see below), whose sum is σ = 574796430. Its totient is φ = 70744128.

The previous prime is 212232439. The next prime is 212232491. The reversal of 212232456 is 654232212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 184036356 + 28196100 = 13566^2 + 5310^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1473765 + ... + 1473908.

Almost surely, 2^212232456 is an apocalyptic number.

It is an amenable number.

212232456 is an abundant number, since it is smaller than the sum of its proper divisors (362563974).

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

212232456 is a wasteful number, since it uses less digits than its factorization.

212232456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947685 (or 2947678 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 212232456 is about 14568.2001633695. The cubic root of 212232456 is about 596.4910521459.

Adding to 212232456 its reverse (654232212), we get a palindrome (866464668).

The spelling of 212232456 in words is "two hundred twelve million, two hundred thirty-two thousand, four hundred fifty-six".