164217172 has 24 divisors (see below), whose sum is σ = 336074816. Its totient is φ = 68741568.

The previous prime is 164217113. The next prime is 164217187. The reversal of 164217172 is 271712461.

It is a congruent 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, 66993 + ... + 69400.

Almost surely, 2^164217172 is an apocalyptic number.

It is an amenable number.

164217172 is an abundant number, since it is smaller than the sum of its proper divisors (171857644).

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

164217172 is a wasteful number, since it uses less digits than its factorization.

164217172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136447 (or 136445 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 164217172 is about 12814.7248117156. The cubic root of 164217172 is about 547.6118737491.

The spelling of 164217172 in words is "one hundred sixty-four million, two hundred seventeen thousand, one hundred seventy-two".