20755536 has 40 divisors (see below), whose sum is σ = 53806080. Its totient is φ = 6894336.

The previous prime is 20755519. The next prime is 20755547. The reversal of 20755536 is 63555702.

It is a junction number, because it is equal to n+sod(n) for n = 20755497 and 20755506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17820 + ... + 18948.

It is an arithmetic number, because the mean of its divisors is an integer number (1345152).

Almost surely, 2^20755536 is an apocalyptic number.

It is an amenable number.

20755536 is an abundant number, since it is smaller than the sum of its proper divisors (33050544).

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

20755536 is a wasteful number, since it uses less digits than its factorization.

20755536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 20755536 is about 4555.8244039910. The cubic root of 20755536 is about 274.8176686685.

The spelling of 20755536 in words is "twenty million, seven hundred fifty-five thousand, five hundred thirty-six".