20434077 has 12 divisors (see below), whose sum is σ = 29591484. Its totient is φ = 13587840.

The previous prime is 20434069. The next prime is 20434079. The reversal of 20434077 is 77043402.

It can be written as a sum of positive squares in 2 ways, for example, as 8696601 + 11737476 = 2949^2 + 3426^2 .

It is not a de Polignac number, because 20434077 - 2³ = 20434069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20434077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1093 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (2465957).

Almost surely, 2^20434077 is an apocalyptic number.

It is an amenable number.

20434077 is a deficient number, since it is larger than the sum of its proper divisors (9157407).

20434077 is a wasteful number, since it uses less digits than its factorization.

20434077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820 (or 5817 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20434077 is about 4520.4067294880. The cubic root of 20434077 is about 273.3915004438.

Adding to 20434077 its reverse (77043402), we get a palindrome (97477479).

The spelling of 20434077 in words is "twenty million, four hundred thirty-four thousand, seventy-seven".