212632644 has 48 divisors (see below), whose sum is σ = 568601600. Its totient is φ = 60582816.

The previous prime is 212632643. The next prime is 212632657. The reversal of 212632644 is 446236212.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (212632643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28497 + ... + 35175.

Almost surely, 2^212632644 is an apocalyptic number.

It is an amenable number.

212632644 is an abundant number, since it is smaller than the sum of its proper divisors (355968956).

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

212632644 is a wasteful number, since it uses less digits than its factorization.

212632644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7072 (or 7070 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 212632644 is about 14581.9286790191. The cubic root of 212632644 is about 596.8657335769.

Adding to 212632644 its reverse (446236212), we get a palindrome (658868856).

The spelling of 212632644 in words is "two hundred twelve million, six hundred thirty-two thousand, six hundred forty-four".