212630064 has 120 divisors (see below), whose sum is σ = 596420160. Its totient is φ = 65085696.

The previous prime is 212630063. The next prime is 212630081. The reversal of 212630064 is 460036212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212630063) 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 23 ways as a sum of consecutive naturals, for example, 2561767 + ... + 2561849.

It is an arithmetic number, because the mean of its divisors is an integer number (4970168).

Almost surely, 2^212630064 is an apocalyptic number.

212630064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212630064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298210080).

212630064 is an abundant number, since it is smaller than the sum of its proper divisors (383790096).

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

212630064 is a wasteful number, since it uses less digits than its factorization.

212630064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 212630064 is about 14581.8402130870. The cubic root of 212630064 is about 596.8633195233.

Adding to 212630064 its reverse (460036212), we get a palindrome (672666276).

The spelling of 212630064 in words is "two hundred twelve million, six hundred thirty thousand, sixty-four".