20026137 has 4 divisors (see below), whose sum is σ = 26701520. Its totient is φ = 13350756.

The previous prime is 20026129. The next prime is 20026141. The reversal of 20026137 is 73162002.

It is a happy number.

20026137 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20026137 - 2³ = 20026129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20026177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337687 + ... + 3337692.

It is an arithmetic number, because the mean of its divisors is an integer number (6675380).

Almost surely, 2^20026137 is an apocalyptic number.

It is an amenable number.

20026137 is a deficient number, since it is larger than the sum of its proper divisors (6675383).

20026137 is an equidigital number, since it uses as much as digits as its factorization.

20026137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675382.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20026137 is about 4475.0572063383. The cubic root of 20026137 is about 271.5599547430.

Adding to 20026137 its reverse (73162002), we get a palindrome (93188139).

The spelling of 20026137 in words is "twenty million, twenty-six thousand, one hundred thirty-seven".