20046678 has 8 divisors (see below), whose sum is σ = 40093368. Its totient is φ = 6682224.

The previous prime is 20046671. The next prime is 20046701. The reversal of 20046678 is 87664002.

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

20046678 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20046671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1670551 + ... + 1670562.

It is an arithmetic number, because the mean of its divisors is an integer number (5011671).

Almost surely, 2^20046678 is an apocalyptic number.

20046678 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.

20046678 is a wasteful number, since it uses less digits than its factorization.

20046678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341118.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20046678 is about 4477.3516725850. The cubic root of 20046678 is about 271.6527702294.

The spelling of 20046678 in words is "twenty million, forty-six thousand, six hundred seventy-eight".