19850814 has 12 divisors (see below), whose sum is σ = 43010136.
Its totient is φ = 6616932.
The previous prime is 19850807. The next prime is 19850851. The reversal of 19850814 is 41805891.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 551394 + ... + 551429.
It is an arithmetic number, because the mean of its divisors is an integer number (3584178).
Almost surely, 219850814 is an apocalyptic number.
19850814 is an abundant number, since it is smaller than the sum of its proper divisors (23159322).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19850814 is a wasteful number, since it uses less digits than its factorization.
19850814 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1102831 (or 1102828 counting only the distinct ones).
The product of its (nonzero) digits is 11520, while the sum is 36.
The square root of 19850814 is about 4455.4252322309.
The cubic root of 19850814 is about 270.7651546780.
The spelling of 19850814 in words is "nineteen million, eight hundred fifty thousand, eight hundred fourteen".