20380789 has 16 divisors (see below), whose sum is σ = 24071040. Its totient is φ = 17012160.

The previous prime is 20380777. The next prime is 20380799. The reversal of 20380789 is 98708302.

It is not a de Polignac number, because 20380789 - 2¹⁵ = 20348021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380769) 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, 51139 + ... + 51535.

It is an arithmetic number, because the mean of its divisors is an integer number (1504440).

Almost surely, 2^20380789 is an apocalyptic number.

It is an amenable number.

20380789 is a deficient number, since it is larger than the sum of its proper divisors (3690251).

20380789 is a wasteful number, since it uses less digits than its factorization.

20380789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

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

The square root of 20380789 is about 4514.5087218877. The cubic root of 20380789 is about 273.1536433819.

The spelling of 20380789 in words is "twenty million, three hundred eighty thousand, seven hundred eighty-nine".