200000172 has 24 divisors (see below), whose sum is σ = 494118576. Its totient is φ = 62745088.

The previous prime is 200000161. The next prime is 200000183. The reversal of 200000172 is 271000002.

It is an interprime number because it is at equal distance from previous prime (200000161) and next prime (200000183).

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 489993 + ... + 490400.

It is an arithmetic number, because the mean of its divisors is an integer number (20588274).

Almost surely, 2^200000172 is an apocalyptic number.

It is an amenable number.

200000172 is an abundant number, since it is smaller than the sum of its proper divisors (294118404).

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

200000172 is a wasteful number, since it uses less digits than its factorization.

200000172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980417 (or 980415 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 200000172 is about 14142.1417048480. The cubic root of 200000172 is about 584.8037152862.

Adding to 200000172 its reverse (271000002), we get a palindrome (471000174).

The spelling of 200000172 in words is "two hundred million, one hundred seventy-two", and thus it is an aban number.