20095560 has 128 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 5119488.

The previous prime is 20095553. The next prime is 20095561. The reversal of 20095560 is 6559002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20095561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24436 + ... + 25244.

It is an arithmetic number, because the mean of its divisors is an integer number (546750).

Almost surely, 2^20095560 is an apocalyptic number.

20095560 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 20095560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34992000).

20095560 is an abundant number, since it is smaller than the sum of its proper divisors (49888440).

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

20095560 is a wasteful number, since it uses less digits than its factorization.

20095560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 842 counting only the distinct ones).

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

The square root of 20095560 is about 4482.8071562359. The cubic root of 20095560 is about 271.8733911914.

It can be divided in two parts, 2009 and 5560, that added together give a square (7569 = 87²).

The spelling of 20095560 in words is "twenty million, ninety-five thousand, five hundred sixty".