19850850 has 72 divisors (see below), whose sum is σ = 55091712. Its totient is φ = 5119200.

The previous prime is 19850807. The next prime is 19850851. The reversal of 19850850 is 5805891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850851) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 13239 + ... + 14661.

Almost surely, 2^19850850 is an apocalyptic number.

19850850 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 19850850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27545856).

19850850 is an abundant number, since it is smaller than the sum of its proper divisors (35240862).

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

19850850 is a wasteful number, since it uses less digits than its factorization.

19850850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 19850850 is about 4455.4292722475. The cubic root of 19850850 is about 270.7653183579.

The spelling of 19850850 in words is "nineteen million, eight hundred fifty thousand, eight hundred fifty".