20442683 has 8 divisors (see below), whose sum is σ = 20953296. Its totient is φ = 19936800.

The previous prime is 20442661. The next prime is 20442691. The reversal of 20442683 is 38624402.

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

It is a cyclic number.

It is not a de Polignac number, because 20442683 - 2⁸ = 20442427 is a prime.

It is a super-3 number, since 3×20442683³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20447683) by changing a digit.

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, 8528 + ... + 10658.

It is an arithmetic number, because the mean of its divisors is an integer number (2619162).

Almost surely, 2^20442683 is an apocalyptic number.

20442683 is a deficient number, since it is larger than the sum of its proper divisors (510613).

20442683 is a wasteful number, since it uses less digits than its factorization.

20442683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 20442683 is about 4521.3585347769. The cubic root of 20442683 is about 273.4298755077.

The spelling of 20442683 in words is "twenty million, four hundred forty-two thousand, six hundred eighty-three".