190280000 has 140 divisors (see below), whose sum is σ = 485619552. Its totient is φ = 73920000.

The previous prime is 190279961. The next prime is 190280021. The reversal of 190280000 is 82091.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2679965 + ... + 2680035.

Almost surely, 2^190280000 is an apocalyptic number.

190280000 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 190280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242809776).

190280000 is an abundant number, since it is smaller than the sum of its proper divisors (295339552).

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

190280000 is an frugal number, since it uses more digits than its factorization.

190280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 190280000 is about 13794.2016804163. The cubic root of 190280000 is about 575.1719712459.

The spelling of 190280000 in words is "one hundred ninety million, two hundred eighty thousand".