20340112 has 20 divisors (see below), whose sum is σ = 42440860. Its totient is φ = 9387648.

The previous prime is 20340101. The next prime is 20340167. The reversal of 20340112 is 21104302.

It can be written as a sum of positive squares in 2 ways, for example, as 6471936 + 13868176 = 2544^2 + 3724^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20340092 and 20340101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48687 + ... + 49102.

It is an arithmetic number, because the mean of its divisors is an integer number (2122043).

Almost surely, 2^20340112 is an apocalyptic number.

It is an amenable number.

20340112 is an abundant number, since it is smaller than the sum of its proper divisors (22100748).

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

20340112 is a wasteful number, since it uses less digits than its factorization.

20340112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97810 (or 97804 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20340112 is about 4510.0013303767. The cubic root of 20340112 is about 272.9717977728.

Adding to 20340112 its reverse (21104302), we get a palindrome (41444414).

The spelling of 20340112 in words is "twenty million, three hundred forty thousand, one hundred twelve".