20126015 has 48 divisors (see below), whose sum is σ = 31026240. Its totient is φ = 12418560.

The previous prime is 20126009. The next prime is 20126017. The reversal of 20126015 is 51062102.

It is not a de Polignac number, because 20126015 - 2¹² = 20121919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20125984 and 20126002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226091 + ... + 226179.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^20126015 is an apocalyptic number.

20126015 is a deficient number, since it is larger than the sum of its proper divisors (10900225).

20126015 is a wasteful number, since it uses less digits than its factorization.

20126015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20126015 is about 4486.2027372824. The cubic root of 20126015 is about 272.0106640499.

Adding to 20126015 its reverse (51062102), we get a palindrome (71188117).

The spelling of 20126015 in words is "twenty million, one hundred twenty-six thousand, fifteen".