2009850 has 24 divisors (see below), whose sum is σ = 4984800. Its totient is φ = 535920.

The previous prime is 2009831. The next prime is 2009857. The reversal of 2009850 is 589002.

It is a self number, because there is not a number n which added to its sum of digits gives 2009850.

It is not an unprimeable number, because it can be changed into a prime (2009857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6550 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (207700).

2^2009850 is an apocalyptic number.

2009850 is an abundant number, since it is smaller than the sum of its proper divisors (2974950).

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

2009850 is a wasteful number, since it uses less digits than its factorization.

2009850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13414 (or 13409 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 2009850 is about 1417.6917859676. The cubic root of 2009850 is about 126.1986033971.

The spelling of 2009850 in words is "two million, nine thousand, eight hundred fifty".