20846634 has 8 divisors (see below), whose sum is σ = 41693280. Its totient is φ = 6948876.

The previous prime is 20846627. The next prime is 20846653. The reversal of 20846634 is 43664802.

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

20846634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20846595 and 20846604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737214 + ... + 1737225.

It is an arithmetic number, because the mean of its divisors is an integer number (5211660).

Almost surely, 2^20846634 is an apocalyptic number.

20846634 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.

20846634 is a wasteful number, since it uses less digits than its factorization.

20846634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474444.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 20846634 is about 4565.8114284320. The cubic root of 20846634 is about 275.2191487290.

The spelling of 20846634 in words is "twenty million, eight hundred forty-six thousand, six hundred thirty-four".