20813466 has 8 divisors (see below), whose sum is σ = 41626944. Its totient is φ = 6937820.

The previous prime is 20813447. The next prime is 20813467. The reversal of 20813466 is 66431802.

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

20813466 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20813467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734450 + ... + 1734461.

It is an arithmetic number, because the mean of its divisors is an integer number (5203368).

Almost surely, 2^20813466 is an apocalyptic number.

20813466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20813466 is a wasteful number, since it uses less digits than its factorization.

20813466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468916.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20813466 is about 4562.1777694430. The cubic root of 20813466 is about 275.0731089369.

The spelling of 20813466 in words is "twenty million, eight hundred thirteen thousand, four hundred sixty-six".