20741982 has 16 divisors (see below), whose sum is σ = 42496272. Its totient is φ = 6745280.

The previous prime is 20741947. The next prime is 20742017. The reversal of 20741982 is 28914702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20741947) and next prime (20742017).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41913 + ... + 42404.

It is an arithmetic number, because the mean of its divisors is an integer number (2656017).

Almost surely, 2^20741982 is an apocalyptic number.

20741982 is an abundant number, since it is smaller than the sum of its proper divisors (21754290).

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

20741982 is a wasteful number, since it uses less digits than its factorization.

20741982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84363.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 20741982 is about 4554.3366147003. The cubic root of 20741982 is about 274.7578341936.

The spelling of 20741982 in words is "twenty million, seven hundred forty-one thousand, nine hundred eighty-two".