20115441 has 6 divisors (see below), whose sum is σ = 29055650. Its totient is φ = 13410288.

The previous prime is 20115439. The next prime is 20115449. The reversal of 20115441 is 14451102.

It can be written as a sum of positive squares in only one way, i.e., 10751841 + 9363600 = 3279^2 + 3060^2 .

It is not a de Polignac number, because 20115441 - 2¹ = 20115439 is a prime.

It is a super-3 number, since 3×20115441³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20115449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117516 + ... + 1117533.

Almost surely, 2^20115441 is an apocalyptic number.

It is an amenable number.

20115441 is a deficient number, since it is larger than the sum of its proper divisors (8940209).

20115441 is a wasteful number, since it uses less digits than its factorization.

20115441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235055 (or 2235052 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 20115441 is about 4485.0240802029. The cubic root of 20115441 is about 271.9630185088.

Adding to 20115441 its reverse (14451102), we get a palindrome (34566543).

The spelling of 20115441 in words is "twenty million, one hundred fifteen thousand, four hundred forty-one".