20613134 has 4 divisors (see below), whose sum is σ = 30919704. Its totient is φ = 10306566.

The previous prime is 20613127. The next prime is 20613139. The reversal of 20613134 is 43131602.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20613139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5153282 + ... + 5153285.

It is an arithmetic number, because the mean of its divisors is an integer number (7729926).

Almost surely, 2^20613134 is an apocalyptic number.

20613134 is a deficient number, since it is larger than the sum of its proper divisors (10306570).

20613134 is a wasteful number, since it uses less digits than its factorization.

20613134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306569.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20613134 is about 4540.1689395880. The cubic root of 20613134 is about 274.1877254401.

Adding to 20613134 its reverse (43131602), we get a palindrome (63744736).

The spelling of 20613134 in words is "twenty million, six hundred thirteen thousand, one hundred thirty-four".