20618134 has 8 divisors (see below), whose sum is σ = 31066560. Its totient is φ = 10262616.

The previous prime is 20618123. The next prime is 20618141. The reversal of 20618134 is 43181602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20618099 and 20618108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22669 + ... + 23560.

It is an arithmetic number, because the mean of its divisors is an integer number (3883320).

Almost surely, 2^20618134 is an apocalyptic number.

20618134 is a deficient number, since it is larger than the sum of its proper divisors (10448426).

20618134 is a wasteful number, since it uses less digits than its factorization.

20618134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46454.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20618134 is about 4540.7195465036. The cubic root of 20618134 is about 274.2098929862.

Adding to 20618134 its reverse (43181602), we get a palindrome (63799736).

The spelling of 20618134 in words is "twenty million, six hundred eighteen thousand, one hundred thirty-four".