20413375 has 8 divisors (see below), whose sum is σ = 25476048. Its totient is φ = 16330600.

The previous prime is 20413357. The next prime is 20413399. The reversal of 20413375 is 57331402.

It is not a de Polignac number, because 20413375 - 2⁷ = 20413247 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 81529 + ... + 81778.

It is an arithmetic number, because the mean of its divisors is an integer number (3184506).

Almost surely, 2^20413375 is an apocalyptic number.

20413375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20413375 is a deficient number, since it is larger than the sum of its proper divisors (5062673).

20413375 is an equidigital number, since it uses as much as digits as its factorization.

20413375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163322 (or 163312 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20413375 is about 4518.1163110305. The cubic root of 20413375 is about 273.2991438828.

Adding to 20413375 its reverse (57331402), we get a palindrome (77744777).

The spelling of 20413375 in words is "twenty million, four hundred thirteen thousand, three hundred seventy-five".