20461475 has 12 divisors (see below), whose sum is σ = 25600296. Its totient is φ = 16222080.

The previous prime is 20461459. The next prime is 20461487. The reversal of 20461475 is 57416402.

It is not a de Polignac number, because 20461475 - 2⁴ = 20461459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (2133358).

Almost surely, 2^20461475 is an apocalyptic number.

20461475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20461475 is a deficient number, since it is larger than the sum of its proper divisors (5138821).

20461475 is a wasteful number, since it uses less digits than its factorization.

20461475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7366 (or 7361 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20461475 is about 4523.4361938686. The cubic root of 20461475 is about 273.5136336028.

Adding to 20461475 its reverse (57416402), we get a palindrome (77877877).

The spelling of 20461475 in words is "twenty million, four hundred sixty-one thousand, four hundred seventy-five".