20341819 has 4 divisors (see below), whose sum is σ = 20372544. Its totient is φ = 20311096.

The previous prime is 20341817. The next prime is 20341829. The reversal of 20341819 is 91814302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20341819 - 2¹ = 20341817 is a prime.

It is a super-2 number, since 2×20341819² = 827579200457522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20341813) 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 3 ways as a sum of consecutive naturals, for example, 14347 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (5093136).

Almost surely, 2^20341819 is an apocalyptic number.

20341819 is a deficient number, since it is larger than the sum of its proper divisors (30725).

20341819 is an equidigital number, since it uses as much as digits as its factorization.

20341819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30724.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20341819 is about 4510.1905724703. The cubic root of 20341819 is about 272.9794337488.

The spelling of 20341819 in words is "twenty million, three hundred forty-one thousand, eight hundred nineteen".