20535862 has 4 divisors (see below), whose sum is σ = 30803796. Its totient is φ = 10267930.

The previous prime is 20535859. The next prime is 20535869. The reversal of 20535862 is 26853502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5133964 + ... + 5133967.

It is an arithmetic number, because the mean of its divisors is an integer number (7700949).

Almost surely, 2^20535862 is an apocalyptic number.

20535862 is a deficient number, since it is larger than the sum of its proper divisors (10267934).

20535862 is a wasteful number, since it uses less digits than its factorization.

20535862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10267933.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20535862 is about 4531.6511339687. The cubic root of 20535862 is about 273.8446826071.

The spelling of 20535862 in words is "twenty million, five hundred thirty-five thousand, eight hundred sixty-two".