20464461 has 8 divisors (see below), whose sum is σ = 30317760. Its totient is φ = 13642956.

The previous prime is 20464439. The next prime is 20464471. The reversal of 20464461 is 16446402.

It is not a de Polignac number, because 20464461 - 2⁷ = 20464333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 757943 = 20464461 / (2 + 0 + 4 + 6 + 4 + 4 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464421) 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 7 ways as a sum of consecutive naturals, for example, 378945 + ... + 378998.

It is an arithmetic number, because the mean of its divisors is an integer number (3789720).

Almost surely, 2^20464461 is an apocalyptic number.

It is an amenable number.

20464461 is a deficient number, since it is larger than the sum of its proper divisors (9853299).

20464461 is an equidigital number, since it uses as much as digits as its factorization.

20464461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757952 (or 757946 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20464461 is about 4523.7662406451. The cubic root of 20464461 is about 273.5269378242.

The spelling of 20464461 in words is "twenty million, four hundred sixty-four thousand, four hundred sixty-one".