190045000 has 80 divisors (see below), whose sum is σ = 449856000. Its totient is φ = 75240000.

The previous prime is 190044997. The next prime is 190045001. The reversal of 190045000 is 540091.

It is a super-2 number, since 2×190045000² = 72234204050000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190045001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 954901 + ... + 955099.

It is an arithmetic number, because the mean of its divisors is an integer number (5623200).

Almost surely, 2^190045000 is an apocalyptic number.

190045000 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 190045000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224928000).

190045000 is an abundant number, since it is smaller than the sum of its proper divisors (259811000).

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

190045000 is a wasteful number, since it uses less digits than its factorization.

190045000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 190045000 is about 13785.6809770138. The cubic root of 190045000 is about 574.9350903414.

Adding to 190045000 its reverse (540091), we get a palindrome (190585091).

The spelling of 190045000 in words is "one hundred ninety million, forty-five thousand".