20343012 has 24 divisors (see below), whose sum is σ = 48246912. Its totient is φ = 6669600.

The previous prime is 20342981. The next prime is 20343019. The reversal of 20343012 is 21034302.

It is a junction number, because it is equal to n+sod(n) for n = 20342982 and 20343000.

It is not an unprimeable number, because it can be changed into a prime (20343019) 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, 13164 + ... + 14627.

It is an arithmetic number, because the mean of its divisors is an integer number (2010288).

Almost surely, 2^20343012 is an apocalyptic number.

It is an amenable number.

20343012 is an abundant number, since it is smaller than the sum of its proper divisors (27903900).

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

20343012 is a wasteful number, since it uses less digits than its factorization.

20343012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27859 (or 27857 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20343012 is about 4510.3228265835. The cubic root of 20343012 is about 272.9847701791.

Adding to 20343012 its reverse (21034302), we get a palindrome (41377314).

The spelling of 20343012 in words is "twenty million, three hundred forty-three thousand, twelve".