212181464 has 32 divisors (see below), whose sum is σ = 441374400. Its totient is φ = 94809120.

The previous prime is 212181457. The next prime is 212181467. The reversal of 212181464 is 464181212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212181467) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15242 + ... + 25625.

It is an arithmetic number, because the mean of its divisors is an integer number (13792950).

Almost surely, 2^212181464 is an apocalyptic number.

It is an amenable number.

212181464 is an abundant number, since it is smaller than the sum of its proper divisors (229192936).

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

212181464 is a wasteful number, since it uses less digits than its factorization.

212181464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40943 (or 40939 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 212181464 is about 14566.4499449935. The cubic root of 212181464 is about 596.4432763743.

The spelling of 212181464 in words is "two hundred twelve million, one hundred eighty-one thousand, four hundred sixty-four".