190987000 has 64 divisors (see below), whose sum is σ = 449036640. Its totient is φ = 76032000.

The previous prime is 190986977. The next prime is 190987033. The reversal of 190987000 is 789091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330712 + ... + 331288.

Almost surely, 2^190987000 is an apocalyptic number.

190987000 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 190987000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224518320).

190987000 is an abundant number, since it is smaller than the sum of its proper divisors (258049640).

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

190987000 is a wasteful number, since it uses less digits than its factorization.

190987000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 190987000 is about 13819.8046295887. The cubic root of 190987000 is about 575.8834560376.

The spelling of 190987000 in words is "one hundred ninety million, nine hundred eighty-seven thousand".