20106572 has 12 divisors (see below), whose sum is σ = 35345856. Its totient is φ = 10007760.

The previous prime is 20106521. The next prime is 20106589. The reversal of 20106572 is 27560102.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10379 + ... + 12162.

It is an arithmetic number, because the mean of its divisors is an integer number (2945488).

Almost surely, 2^20106572 is an apocalyptic number.

It is an amenable number.

20106572 is a deficient number, since it is larger than the sum of its proper divisors (15239284).

20106572 is a wasteful number, since it uses less digits than its factorization.

20106572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768 (or 22766 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20106572 is about 4484.0352362576. The cubic root of 20106572 is about 271.9230426748.

Adding to 20106572 its reverse (27560102), we get a palindrome (47666674).

The spelling of 20106572 in words is "twenty million, one hundred six thousand, five hundred seventy-two".