20046819 has 8 divisors (see below), whose sum is σ = 28785232. Its totient is φ = 12336480.

The previous prime is 20046809. The next prime is 20046833. The reversal of 20046819 is 91864002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20046819 - 2¹² = 20042723 is a prime.

It is a super-2 number, since 2×20046819² = 803749904037522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20046809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256972 + ... + 257049.

It is an arithmetic number, because the mean of its divisors is an integer number (3598154).

Almost surely, 2^20046819 is an apocalyptic number.

20046819 is a deficient number, since it is larger than the sum of its proper divisors (8738413).

20046819 is a wasteful number, since it uses less digits than its factorization.

20046819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514037.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20046819 is about 4477.3674184726. The cubic root of 20046819 is about 271.6534071255.

The spelling of 20046819 in words is "twenty million, forty-six thousand, eight hundred nineteen".