20789461 has 16 divisors (see below), whose sum is σ = 26167680. Its totient is φ = 16044480.

The previous prime is 20789443. The next prime is 20789507. The reversal of 20789461 is 16498702.

It is a cyclic number.

It is not a de Polignac number, because 20789461 - 2⁵ = 20789429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20789461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789411) 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, 7155 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (1635480).

Almost surely, 2^20789461 is an apocalyptic number.

It is an amenable number.

20789461 is a deficient number, since it is larger than the sum of its proper divisors (5378219).

20789461 is a wasteful number, since it uses less digits than its factorization.

20789461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 20789461 is about 4559.5461396942. The cubic root of 20789461 is about 274.9673173281.

The spelling of 20789461 in words is "twenty million, seven hundred eighty-nine thousand, four hundred sixty-one".