20115433 has 8 divisors (see below), whose sum is σ = 22803200. Its totient is φ = 17590608.

The previous prime is 20115413. The next prime is 20115439. The reversal of 20115433 is 33451102.

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

It is a cyclic number.

It is not a de Polignac number, because 20115433 - 2¹⁷ = 19984361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20115433.

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 7 ways as a sum of consecutive naturals, for example, 40473 + ... + 40966.

It is an arithmetic number, because the mean of its divisors is an integer number (2850400).

Almost surely, 2^20115433 is an apocalyptic number.

It is an amenable number.

20115433 is a deficient number, since it is larger than the sum of its proper divisors (2687767).

20115433 is a wasteful number, since it uses less digits than its factorization.

20115433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81471.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20115433 is about 4485.0231883459. The cubic root of 20115433 is about 271.9629824552.

Adding to 20115433 its reverse (33451102), we get a palindrome (53566535).

The spelling of 20115433 in words is "twenty million, one hundred fifteen thousand, four hundred thirty-three".