20741886 has 32 divisors (see below), whose sum is σ = 50284800. Its totient is φ = 6285240.

The previous prime is 20741879. The next prime is 20741947. The reversal of 20741886 is 68814702.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20741886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16866 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (1571400).

Almost surely, 2^20741886 is an apocalyptic number.

20741886 is an abundant number, since it is smaller than the sum of its proper divisors (29542914).

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

20741886 is a wasteful number, since it uses less digits than its factorization.

20741886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34941 (or 34935 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 20741886 is about 4554.3260752827. The cubic root of 20741886 is about 274.7574103062.

The spelling of 20741886 in words is "twenty million, seven hundred forty-one thousand, eight hundred eighty-six".