20340912 has 20 divisors (see below), whose sum is σ = 52547480. Its totient is φ = 6780288.

The previous prime is 20340911. The next prime is 20340913. The reversal of 20340912 is 21904302.

It is an interprime number because it is at equal distance from previous prime (20340911) and next prime (20340913).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340911) 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, 211837 + ... + 211932.

It is an arithmetic number, because the mean of its divisors is an integer number (2627374).

Almost surely, 2^20340912 is an apocalyptic number.

It is an amenable number.

20340912 is an abundant number, since it is smaller than the sum of its proper divisors (32206568).

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

20340912 is a wasteful number, since it uses less digits than its factorization.

20340912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423780 (or 423774 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20340912 is about 4510.0900212745. The cubic root of 20340912 is about 272.9753764908.

The spelling of 20340912 in words is "twenty million, three hundred forty thousand, nine hundred twelve".