20461456 has 20 divisors (see below), whose sum is σ = 40092300. Its totient is φ = 10115072.

The previous prime is 20461453. The next prime is 20461459. The reversal of 20461456 is 65416402.

It is an interprime number because it is at equal distance from previous prime (20461453) and next prime (20461459).

It can be written as a sum of positive squares in 2 ways, for example, as 7929856 + 12531600 = 2816^2 + 3540^2 .

It is not an unprimeable number, because it can be changed into a prime (20461451) by changing a digit.

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, 5761 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (2004615).

Almost surely, 2^20461456 is an apocalyptic number.

It is an amenable number.

20461456 is a deficient number, since it is larger than the sum of its proper divisors (19630844).

20461456 is a wasteful number, since it uses less digits than its factorization.

20461456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14466 (or 14460 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20461456 is about 4523.4340936947. The cubic root of 20461456 is about 273.5135489435.

Adding to 20461456 its reverse (65416402), we get a palindrome (85877858).

The spelling of 20461456 in words is "twenty million, four hundred sixty-one thousand, four hundred fifty-six".