20461469 has 6 divisors (see below), whose sum is σ = 23802174. Its totient is φ = 17538360.

The previous prime is 20461459. The next prime is 20461487. The reversal of 20461469 is 96416402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 765625 = 4438^2 + 875^2 .

It is not a de Polignac number, because 20461469 - 2⁴ = 20461453 is a prime.

It is a super-2 number, since 2×20461469² = 837343427275922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20461429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208742 + ... + 208839.

It is an arithmetic number, because the mean of its divisors is an integer number (3967029).

Almost surely, 2^20461469 is an apocalyptic number.

It is an amenable number.

20461469 is a deficient number, since it is larger than the sum of its proper divisors (3340705).

20461469 is an equidigital number, since it uses as much as digits as its factorization.

20461469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417595 (or 417588 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20461469 is about 4523.4355306559. The cubic root of 20461469 is about 273.5136068683.

The spelling of 20461469 in words is "twenty million, four hundred sixty-one thousand, four hundred sixty-nine".