266212172 has 24 divisors (see below), whose sum is σ = 478180080. Its totient is φ = 129634560.

The previous prime is 266212169. The next prime is 266212213. The reversal of 266212172 is 271212662.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18272 + ... + 29432.

It is an arithmetic number, because the mean of its divisors is an integer number (19924170).

Almost surely, 2^266212172 is an apocalyptic number.

It is an amenable number.

266212172 is a deficient number, since it is larger than the sum of its proper divisors (211967908).

266212172 is a wasteful number, since it uses less digits than its factorization.

266212172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321 (or 11319 counting only the distinct ones).

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

The square root of 266212172 is about 16316.0096837431. The cubic root of 266212172 is about 643.2937069802.

The spelling of 266212172 in words is "two hundred sixty-six million, two hundred twelve thousand, one hundred seventy-two".