172266112 has 64 divisors (see below), whose sum is σ = 355816800. Its totient is φ = 83026944.

The previous prime is 172266091. The next prime is 172266121. The reversal of 172266112 is 211662271.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×172266112² = 59351226687193088, which contains 22 as substring.

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, 454339 + ... + 454717.

Almost surely, 2^172266112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172266112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177908400).

172266112 is an abundant number, since it is smaller than the sum of its proper divisors (183550688).

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

172266112 is an equidigital number, since it uses as much as digits as its factorization.

172266112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 501 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 172266112 is about 13125.0185523678. The cubic root of 172266112 is about 556.4164366321.

The spelling of 172266112 in words is "one hundred seventy-two million, two hundred sixty-six thousand, one hundred twelve".