20154134 has 32 divisors (see below), whose sum is σ = 40594176. Its totient is φ = 7247520.

The previous prime is 20154133. The next prime is 20154137. The reversal of 20154134 is 43145102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (1268568).

Almost surely, 2^20154134 is an apocalyptic number.

20154134 is an abundant number, since it is smaller than the sum of its proper divisors (20440042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20154134 is a wasteful number, since it uses less digits than its factorization.

20154134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20154134 is about 4489.3355855850. The cubic root of 20154134 is about 272.1372847200.

Adding to 20154134 its reverse (43145102), we get a palindrome (63299236).

The spelling of 20154134 in words is "twenty million, one hundred fifty-four thousand, one hundred thirty-four".