212633478 has 32 divisors (see below), whose sum is σ = 479579520. Its totient is φ = 69818760.

The previous prime is 212633441. The next prime is 212633479. The reversal of 212633478 is 874336212.

It is a happy number.

212633478 is a `hidden beast` number, since 2 + 12 + 633 + 4 + 7 + 8 = 666.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212633479) 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 15 ways as a sum of consecutive naturals, for example, 25768 + ... + 33003.

It is an arithmetic number, because the mean of its divisors is an integer number (14986860).

Almost surely, 2^212633478 is an apocalyptic number.

212633478 is an abundant number, since it is smaller than the sum of its proper divisors (266946042).

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

212633478 is a wasteful number, since it uses less digits than its factorization.

212633478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58849 (or 58843 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 212633478 is about 14581.9572760312. The cubic root of 212633478 is about 596.8665139296.

The spelling of 212633478 in words is "two hundred twelve million, six hundred thirty-three thousand, four hundred seventy-eight".