20466678 has 16 divisors (see below), whose sum is σ = 40997376. Its totient is φ = 6811560.

The previous prime is 20466671. The next prime is 20466679. The reversal of 20466678 is 87666402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466671) 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, 2163 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (2562336).

Almost surely, 2^20466678 is an apocalyptic number.

20466678 is an abundant number, since it is smaller than the sum of its proper divisors (20530698).

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

20466678 is a wasteful number, since it uses less digits than its factorization.

20466678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 20466678 is about 4524.0112731955. The cubic root of 20466678 is about 273.5368149037.

The spelling of 20466678 in words is "twenty million, four hundred sixty-six thousand, six hundred seventy-eight".