20546676 has 144 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 5909760.

The previous prime is 20546651. The next prime is 20546683. The reversal of 20546676 is 67664502.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20546676.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 662781 + ... + 662811.

It is an arithmetic number, because the mean of its divisors is an integer number (426720).

Almost surely, 2^20546676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20546676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

20546676 is an abundant number, since it is smaller than the sum of its proper divisors (40901004).

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

20546676 is a wasteful number, since it uses less digits than its factorization.

20546676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 20546676 is about 4532.8441402722. The cubic root of 20546676 is about 273.8927422201.

The spelling of 20546676 in words is "twenty million, five hundred forty-six thousand, six hundred seventy-six".