20463134 has 4 divisors (see below), whose sum is σ = 30694704. Its totient is φ = 10231566.

The previous prime is 20463119. The next prime is 20463137. The reversal of 20463134 is 43136402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43136402 = 2 ⋅21568201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20463137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115782 + ... + 5115785.

It is an arithmetic number, because the mean of its divisors is an integer number (7673676).

Almost surely, 2^20463134 is an apocalyptic number.

20463134 is a deficient number, since it is larger than the sum of its proper divisors (10231570).

20463134 is a wasteful number, since it uses less digits than its factorization.

20463134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231569.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20463134 is about 4523.6195684430. The cubic root of 20463134 is about 273.5210254918.

Adding to 20463134 its reverse (43136402), we get a palindrome (63599536).

The spelling of 20463134 in words is "twenty million, four hundred sixty-three thousand, one hundred thirty-four".