20745676 has 24 divisors (see below), whose sum is σ = 41713056. Its totient is φ = 8843520.

The previous prime is 20745667. The next prime is 20745691. The reversal of 20745676 is 67654702.

It is a congruent 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, 3636 + ... + 7396.

It is an arithmetic number, because the mean of its divisors is an integer number (1738044).

Almost surely, 2^20745676 is an apocalyptic number.

It is an amenable number.

20745676 is an abundant number, since it is smaller than the sum of its proper divisors (20967380).

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

20745676 is a wasteful number, since it uses less digits than its factorization.

20745676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 20745676 is about 4554.7421441834. The cubic root of 20745676 is about 274.7741440331.

It can be divided in two parts, 2074 and 5676, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 20745676 in words is "twenty million, seven hundred forty-five thousand, six hundred seventy-six".