20533016 has 32 divisors (see below), whose sum is σ = 45027840. Its totient is φ = 8594208.

The previous prime is 20533001. The next prime is 20533049. The reversal of 20533016 is 61033502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (1407120).

Almost surely, 2^20533016 is an apocalyptic number.

It is an amenable number.

20533016 is an abundant number, since it is smaller than the sum of its proper divisors (24494824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20533016 is a wasteful number, since it uses less digits than its factorization.

20533016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8583 (or 8579 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 20533016 is about 4531.3371095075. The cubic root of 20533016 is about 273.8320316006.

Adding to 20533016 its reverse (61033502), we get a palindrome (81566518).

The spelling of 20533016 in words is "twenty million, five hundred thirty-three thousand, sixteen".