20107572 has 12 divisors (see below), whose sum is σ = 46917696. Its totient is φ = 6702520.

The previous prime is 20107553. The next prime is 20107573. The reversal of 20107572 is 27570102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107573) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 837804 + ... + 837827.

It is an arithmetic number, because the mean of its divisors is an integer number (3909808).

Almost surely, 2^20107572 is an apocalyptic number.

It is an amenable number.

20107572 is an abundant number, since it is smaller than the sum of its proper divisors (26810124).

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

20107572 is a wasteful number, since it uses less digits than its factorization.

20107572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675638 (or 1675636 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 20107572 is about 4484.1467415775. The cubic root of 20107572 is about 271.9275506293.

Adding to 20107572 its reverse (27570102), we get a palindrome (47677674).

The spelling of 20107572 in words is "twenty million, one hundred seven thousand, five hundred seventy-two".