20461408 has 24 divisors (see below), whose sum is σ = 43946280. Its totient is φ = 9300480.

The previous prime is 20461393. The next prime is 20461411. The reversal of 20461408 is 80416402.

It is a congruent number.

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, 28713 + ... + 29416.

It is an arithmetic number, because the mean of its divisors is an integer number (1831095).

Almost surely, 2^20461408 is an apocalyptic number.

It is an amenable number.

20461408 is an abundant number, since it is smaller than the sum of its proper divisors (23484872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20461408 is a wasteful number, since it uses less digits than its factorization.

20461408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58150 (or 58142 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20461408 is about 4523.4287879882. The cubic root of 20461408 is about 273.5133350672.

The spelling of 20461408 in words is "twenty million, four hundred sixty-one thousand, four hundred eight".