20345012 has 12 divisors (see below), whose sum is σ = 35703360. Its totient is φ = 10144056.

The previous prime is 20345011. The next prime is 20345023. The reversal of 20345012 is 21054302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5462 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (2975280).

Almost surely, 2^20345012 is an apocalyptic number.

It is an amenable number.

20345012 is a deficient number, since it is larger than the sum of its proper divisors (15358348).

20345012 is a wasteful number, since it uses less digits than its factorization.

20345012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14230 (or 14228 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20345012 is about 4510.5445347541. The cubic root of 20345012 is about 272.9937159480.

Adding to 20345012 its reverse (21054302), we get a palindrome (41399314).

The spelling of 20345012 in words is "twenty million, three hundred forty-five thousand, twelve".