212626172 has 12 divisors (see below), whose sum is σ = 405922776. Its totient is φ = 96648240.

The previous prime is 212626153. The next prime is 212626181. The reversal of 212626172 is 271626212.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2416163 + ... + 2416250.

It is an arithmetic number, because the mean of its divisors is an integer number (33826898).

Almost surely, 2^212626172 is an apocalyptic number.

212626172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212626172 is a deficient number, since it is larger than the sum of its proper divisors (193296604).

212626172 is a wasteful number, since it uses less digits than its factorization.

212626172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832428 (or 4832426 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 212626172 is about 14581.7067588126. The cubic root of 212626172 is about 596.8596778209.

The spelling of 212626172 in words is "two hundred twelve million, six hundred twenty-six thousand, one hundred seventy-two".