20340012 has 48 divisors (see below), whose sum is σ = 59173632. Its totient is φ = 5282880.

The previous prime is 20340011. The next prime is 20340029. The reversal of 20340012 is 21004302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20340012.

It is not an unprimeable number, because it can be changed into a prime (20340011) 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 15 ways as a sum of consecutive naturals, for example, 10083 + ... + 11930.

It is an arithmetic number, because the mean of its divisors is an integer number (1232784).

Almost surely, 2^20340012 is an apocalyptic number.

20340012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20340012 is an abundant number, since it is smaller than the sum of its proper divisors (38833620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20340012 is a wasteful number, since it uses less digits than its factorization.

20340012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22038 (or 22036 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20340012 is about 4509.9902438919. The cubic root of 20340012 is about 272.9713504264.

Adding to 20340012 its reverse (21004302), we get a palindrome (41344314).

The spelling of 20340012 in words is "twenty million, three hundred forty thousand, twelve".