20134456 has 16 divisors (see below), whose sum is σ = 37952640. Its totient is φ = 10013760.

The previous prime is 20134423. The next prime is 20134463. The reversal of 20134456 is 65443102.

It is a self number, because there is not a number n which added to its sum of digits gives 20134456.

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, 5061 + ... + 8116.

It is an arithmetic number, because the mean of its divisors is an integer number (2372040).

Almost surely, 2^20134456 is an apocalyptic number.

It is an amenable number.

20134456 is a deficient number, since it is larger than the sum of its proper divisors (17818184).

20134456 is a wasteful number, since it uses less digits than its factorization.

20134456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13374 (or 13370 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20134456 is about 4487.1434120162. The cubic root of 20134456 is about 272.0486864982.

Adding to 20134456 its reverse (65443102), we get a palindrome (85577558).

The spelling of 20134456 in words is "twenty million, one hundred thirty-four thousand, four hundred fifty-six".