20190849 has 32 divisors (see below), whose sum is σ = 34007040. Its totient is φ = 10382592.

The previous prime is 20190847. The next prime is 20190857. The reversal of 20190849 is 94809102.

It is not a de Polignac number, because 20190849 - 2¹ = 20190847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20190847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6982 + ... + 9440.

It is an arithmetic number, because the mean of its divisors is an integer number (1062720).

Almost surely, 2^20190849 is an apocalyptic number.

It is an amenable number.

20190849 is a deficient number, since it is larger than the sum of its proper divisors (13816191).

20190849 is a wasteful number, since it uses less digits than its factorization.

20190849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 20190849 is about 4493.4228601368. The cubic root of 20190849 is about 272.3024362686.

The spelling of 20190849 in words is "twenty million, one hundred ninety thousand, eight hundred forty-nine".