20466253 has 4 divisors (see below), whose sum is σ = 20483068. Its totient is φ = 20449440.

The previous prime is 20466239. The next prime is 20466269. The reversal of 20466253 is 35266402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9622404 + 10843849 = 3102^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466253 - 2²¹ = 18369101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466053) 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, 6426 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (5120767).

Almost surely, 2^20466253 is an apocalyptic number.

It is an amenable number.

20466253 is a deficient number, since it is larger than the sum of its proper divisors (16815).

20466253 is a wasteful number, since it uses less digits than its factorization.

20466253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16814.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 20466253 is about 4523.9643013622. The cubic root of 20466253 is about 273.5349215179.

The spelling of 20466253 in words is "twenty million, four hundred sixty-six thousand, two hundred fifty-three".