12172950 has 96 divisors (see below), whose sum is σ = 34283520. Its totient is φ = 3175200.

The previous prime is 12172949. The next prime is 12172961. The reversal of 12172950 is 5927121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95787 + ... + 95913.

It is an arithmetic number, because the mean of its divisors is an integer number (357120).

Almost surely, 2^12172950 is an apocalyptic number.

12172950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12172950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17141760).

12172950 is an abundant number, since it is smaller than the sum of its proper divisors (22110570).

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

12172950 is a wasteful number, since it uses less digits than its factorization.

12172950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12172950 is about 3488.9754943249. The cubic root of 12172950 is about 230.0374860136.

The spelling of 12172950 in words is "twelve million, one hundred seventy-two thousand, nine hundred fifty".