19850008 has 16 divisors (see below), whose sum is σ = 37280880. Its totient is φ = 9908448.

The previous prime is 19849993. The next prime is 19850009. The reversal of 19850008 is 80005891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4110 + ... + 7522.

It is an arithmetic number, because the mean of its divisors is an integer number (2330055).

Almost surely, 2^19850008 is an apocalyptic number.

It is an amenable number.

19850008 is a deficient number, since it is larger than the sum of its proper divisors (17430872).

19850008 is a wasteful number, since it uses less digits than its factorization.

19850008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 19850008 is about 4455.3347797893. The cubic root of 19850008 is about 270.7614900143.

Adding to 19850008 its reverse (80005891), we get a palindrome (99855899).

The spelling of 19850008 in words is "nineteen million, eight hundred fifty thousand, eight".