20533849 has 8 divisors (see below), whose sum is σ = 23590400. Its totient is φ = 17508096.

The previous prime is 20533831. The next prime is 20533859. The reversal of 20533849 is 94833502.

It is a happy number.

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 20533849 - 2⁵ = 20533817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533859) 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, 6249 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (2948800).

Almost surely, 2^20533849 is an apocalyptic number.

It is an amenable number.

20533849 is a deficient number, since it is larger than the sum of its proper divisors (3056551).

20533849 is a wasteful number, since it uses less digits than its factorization.

20533849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15399.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20533849 is about 4531.4290240497. The cubic root of 20533849 is about 273.8357345636.

The spelling of 20533849 in words is "twenty million, five hundred thirty-three thousand, eight hundred forty-nine".