212315604 has 12 divisors (see below), whose sum is σ = 495403104. Its totient is φ = 70771864.

The previous prime is 212315603. The next prime is 212315611. The reversal of 212315604 is 406513212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212315603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8846472 + ... + 8846495.

It is an arithmetic number, because the mean of its divisors is an integer number (41283592).

Almost surely, 2^212315604 is an apocalyptic number.

It is an amenable number.

212315604 is an abundant number, since it is smaller than the sum of its proper divisors (283087500).

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

212315604 is a wasteful number, since it uses less digits than its factorization.

212315604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17692974 (or 17692972 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 212315604 is about 14571.0536338317. The cubic root of 212315604 is about 596.5689393258.

Adding to 212315604 its reverse (406513212), we get a palindrome (618828816).

The spelling of 212315604 in words is "two hundred twelve million, three hundred fifteen thousand, six hundred four".