20860466 has 16 divisors (see below), whose sum is σ = 34205760. Its totient is φ = 9462480.

The previous prime is 20860459. The next prime is 20860493. The reversal of 20860466 is 66406802.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18980 + ... + 20048.

It is an arithmetic number, because the mean of its divisors is an integer number (2137860).

Almost surely, 2^20860466 is an apocalyptic number.

20860466 is a deficient number, since it is larger than the sum of its proper divisors (13345294).

20860466 is a wasteful number, since it uses less digits than its factorization.

20860466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20860466 is about 4567.3259134859. The cubic root of 20860466 is about 275.2800057098.

The spelling of 20860466 in words is "twenty million, eight hundred sixty thousand, four hundred sixty-six".