20260787 has 16 divisors (see below), whose sum is σ = 22161600. Its totient is φ = 18450432.

The previous prime is 20260781. The next prime is 20260789. The reversal of 20260787 is 78706202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20260787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20260781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101714 + ... + 101912.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^20260787 is an apocalyptic number.

20260787 is a deficient number, since it is larger than the sum of its proper divisors (1900813).

20260787 is a wasteful number, since it uses less digits than its factorization.

20260787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20260787 is about 4501.1983959830. The cubic root of 20260787 is about 272.6164785554.

Adding to 20260787 its reverse (78706202), we get a palindrome (98966989).

The spelling of 20260787 in words is "twenty million, two hundred sixty thousand, seven hundred eighty-seven".