20535219 has 48 divisors (see below), whose sum is σ = 33415200. Its totient is φ = 12096000.

The previous prime is 20535217. The next prime is 20535227. The reversal of 20535219 is 91253502.

It is not a de Polignac number, because 20535219 - 2¹ = 20535217 is a prime.

It is a super-2 number, since 2×20535219² = 843390438755922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20535192 and 20535201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203269 + ... + 203369.

It is an arithmetic number, because the mean of its divisors is an integer number (696150).

Almost surely, 2^20535219 is an apocalyptic number.

20535219 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20535219 is a deficient number, since it is larger than the sum of its proper divisors (12879981).

20535219 is a wasteful number, since it uses less digits than its factorization.

20535219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20535219 is about 4531.5801879698. The cubic root of 20535219 is about 273.8418244531.

The spelling of 20535219 in words is "twenty million, five hundred thirty-five thousand, two hundred nineteen".