190638000 has 480 divisors, whose sum is σ = 814769280. Its totient is φ = 40550400.

The previous prime is 190637957. The next prime is 190638011. The reversal of 190638000 is 836091.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2141956 + ... + 2142044.

It is an arithmetic number, because the mean of its divisors is an integer number (1697436).

Almost surely, 2^190638000 is an apocalyptic number.

190638000 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 190638000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407384640).

190638000 is an abundant number, since it is smaller than the sum of its proper divisors (624131280).

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

190638000 is a wasteful number, since it uses less digits than its factorization.

190638000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 190638000 is about 13807.1720493373. The cubic root of 190638000 is about 575.5324620383.

The spelling of 190638000 in words is "one hundred ninety million, six hundred thirty-eight thousand".