20573960 has 128 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 6716160.

The previous prime is 20573951. The next prime is 20573981. The reversal of 20573960 is 6937502.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 192227 + ... + 192333.

It is an arithmetic number, because the mean of its divisors is an integer number (437400).

Almost surely, 2^20573960 is an apocalyptic number.

20573960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20573960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27993600).

20573960 is an abundant number, since it is smaller than the sum of its proper divisors (35413240).

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

20573960 is a wasteful number, since it uses less digits than its factorization.

20573960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 20573960 is about 4535.8527312954. The cubic root of 20573960 is about 274.0139229610.

The spelling of 20573960 in words is "twenty million, five hundred seventy-three thousand, nine hundred sixty".