20134870 has 32 divisors (see below), whose sum is σ = 43603200. Its totient is φ = 6539616.

The previous prime is 20134843. The next prime is 20134883. The reversal of 20134870 is 7843102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6240 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (1362600).

Almost surely, 2^20134870 is an apocalyptic number.

20134870 is an abundant number, since it is smaller than the sum of its proper divisors (23468330).

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

20134870 is a wasteful number, since it uses less digits than its factorization.

20134870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20134870 is about 4487.1895435785. The cubic root of 20134870 is about 272.0505510861.

Adding to 20134870 its reverse (7843102), we get a palindrome (27977972).

The spelling of 20134870 in words is "twenty million, one hundred thirty-four thousand, eight hundred seventy".