20413377 has 10 divisors (see below), whose sum is σ = 30494178. Its totient is φ = 13608864.

The previous prime is 20413357. The next prime is 20413399. The reversal of 20413377 is 77331402.

It can be written as a sum of positive squares in only one way, i.e., 14017536 + 6395841 = 3744^2 + 2529^2 .

It is not a de Polignac number, because 20413377 - 2¹¹ = 20411329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20413377.

It is not an unprimeable number, because it can be changed into a prime (20413357) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 125928 + ... + 126089.

Almost surely, 2^20413377 is an apocalyptic number.

20413377 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20413377 is a deficient number, since it is larger than the sum of its proper divisors (10080801).

20413377 is an equidigital number, since it uses as much as digits as its factorization.

20413377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252029 (or 252020 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20413377 is about 4518.1165323617. The cubic root of 20413377 is about 273.2991528083.

Adding to 20413377 its reverse (77331402), we get a palindrome (97744779).

The spelling of 20413377 in words is "twenty million, four hundred thirteen thousand, three hundred seventy-seven".