170199144 has 96 divisors (see below), whose sum is σ = 494676000. Its totient is φ = 54758592.

The previous prime is 170199143. The next prime is 170199151. The reversal of 170199144 is 441991071.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 170199099 and 170199108.

It is not an unprimeable number, because it can be changed into a prime (170199143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54867 + ... + 57885.

It is an arithmetic number, because the mean of its divisors is an integer number (5152875).

Almost surely, 2^170199144 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 170199144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247338000).

170199144 is an abundant number, since it is smaller than the sum of its proper divisors (324476856).

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

170199144 is a wasteful number, since it uses less digits than its factorization.

170199144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069 (or 3053 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 170199144 is about 13046.0393989900. The cubic root of 170199144 is about 554.1820529720.

The spelling of 170199144 in words is "one hundred seventy million, one hundred ninety-nine thousand, one hundred forty-four".