20950767 has 12 divisors (see below), whose sum is σ = 30906720. Its totient is φ = 13669728.

The previous prime is 20950759. The next prime is 20950771. The reversal of 20950767 is 76705902.

It is not a de Polignac number, because 20950767 - 2³ = 20950759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20950717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24342 + ... + 25187.

It is an arithmetic number, because the mean of its divisors is an integer number (2575560).

Almost surely, 2^20950767 is an apocalyptic number.

20950767 is a deficient number, since it is larger than the sum of its proper divisors (9955953).

20950767 is a wasteful number, since it uses less digits than its factorization.

20950767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49582 (or 49579 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 20950767 is about 4577.2007821375. The cubic root of 20950767 is about 275.6766455739.

The spelling of 20950767 in words is "twenty million, nine hundred fifty thousand, seven hundred sixty-seven".