190840650 has 384 divisors, whose sum is σ = 671956992. Its totient is φ = 34560000.

The previous prime is 190840621. The next prime is 190840667. The reversal of 190840650 is 56048091.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4654630 + ... + 4654670.

It is an arithmetic number, because the mean of its divisors is an integer number (1749888).

Almost surely, 2^190840650 is an apocalyptic number.

190840650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 190840650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335978496).

190840650 is an abundant number, since it is smaller than the sum of its proper divisors (481116342).

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

190840650 is a wasteful number, since it uses less digits than its factorization.

190840650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 190840650 is about 13814.5086774738. The cubic root of 190840650 is about 575.7363219735.

The spelling of 190840650 in words is "one hundred ninety million, eight hundred forty thousand, six hundred fifty".