20115126 has 24 divisors (see below), whose sum is σ = 43692480. Its totient is φ = 6688176.

The previous prime is 20115113. The next prime is 20115127. The reversal of 20115126 is 62151102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20115099 and 20115108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7456 + ... + 9788.

It is an arithmetic number, because the mean of its divisors is an integer number (1820520).

Almost surely, 2^20115126 is an apocalyptic number.

20115126 is an abundant number, since it is smaller than the sum of its proper divisors (23577354).

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

20115126 is a wasteful number, since it uses less digits than its factorization.

20115126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 20115126 is about 4484.9889631971. The cubic root of 20115126 is about 271.9615988896.

Adding to 20115126 its reverse (62151102), we get a palindrome (82266228).

The spelling of 20115126 in words is "twenty million, one hundred fifteen thousand, one hundred twenty-six".