20115434 has 8 divisors (see below), whose sum is σ = 30223908. Its totient is φ = 10040800.

The previous prime is 20115413. The next prime is 20115439. The reversal of 20115434 is 43451102.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 286225 = 4453^2 + 535^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20115439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6917 + ... + 9384.

Almost surely, 2^20115434 is an apocalyptic number.

20115434 is a deficient number, since it is larger than the sum of its proper divisors (10108474).

20115434 is a wasteful number, since it uses less digits than its factorization.

20115434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920.

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

The square root of 20115434 is about 4485.0232998280. The cubic root of 20115434 is about 271.9629869619.

Adding to 20115434 its reverse (43451102), we get a palindrome (63566536).

The spelling of 20115434 in words is "twenty million, one hundred fifteen thousand, four hundred thirty-four".