190000 has 50 divisors (see below), whose sum is σ = 484220. Its totient is φ = 72000.

The previous prime is 189997. The next prime is 190027. The reversal of 190000 is 91.

190000 = 61² + 62² + ... + 92².

It is a happy number.

190000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×190000² = 72200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9991 + ... + 10009.

2¹⁹⁰⁰⁰⁰ is an apocalyptic number.

190000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242110).

190000 is an abundant number, since it is smaller than the sum of its proper divisors (294220).

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

190000 is an equidigital number, since it uses as much as digits as its factorization.

190000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 190000 is about 435.8898943541. The cubic root of 190000 is about 57.4889707894.

Adding to 190000 its reverse (91), we get a palindrome (190091).

The spelling of 190000 in words is "one hundred ninety thousand".