20466447 has 8 divisors (see below), whose sum is σ = 27530544. Its totient is φ = 13523328.

The previous prime is 20466437. The next prime is 20466461. The reversal of 20466447 is 74466402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20466447 - 2⁷ = 20466319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29848 + ... + 30525.

It is an arithmetic number, because the mean of its divisors is an integer number (3441318).

Almost surely, 2^20466447 is an apocalyptic number.

20466447 is a deficient number, since it is larger than the sum of its proper divisors (7064097).

20466447 is a wasteful number, since it uses less digits than its factorization.

20466447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60489.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 20466447 is about 4523.9857426831. The cubic root of 20466447 is about 273.5357857961.

The spelling of 20466447 in words is "twenty million, four hundred sixty-six thousand, four hundred forty-seven".