20411408 has 20 divisors (see below), whose sum is σ = 39789120. Its totient is φ = 10143264.

The previous prime is 20411387. The next prime is 20411411. The reversal of 20411408 is 80411402.

It is a self number, because there is not a number n which added to its sum of digits gives 20411408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148 + ... + 6491.

It is an arithmetic number, because the mean of its divisors is an integer number (1989456).

Almost surely, 2^20411408 is an apocalyptic number.

It is an amenable number.

20411408 is a deficient number, since it is larger than the sum of its proper divisors (19377712).

20411408 is a wasteful number, since it uses less digits than its factorization.

20411408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814 (or 7808 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 20411408 is about 4517.8986265741. The cubic root of 20411408 is about 273.2903653788.

It can be divided in two parts, 204 and 11408, that multiplied together give a palindrome (2327232).

The spelling of 20411408 in words is "twenty million, four hundred eleven thousand, four hundred eight".