20946382 has 4 divisors (see below), whose sum is σ = 31419576. Its totient is φ = 10473190.

The previous prime is 20946377. The next prime is 20946383. The reversal of 20946382 is 28364902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28364902 = 2 ⋅14182451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946383) 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 as a sum of consecutive naturals, namely, 5236594 + ... + 5236597.

It is an arithmetic number, because the mean of its divisors is an integer number (7854894).

Almost surely, 2^20946382 is an apocalyptic number.

20946382 is a deficient number, since it is larger than the sum of its proper divisors (10473194).

20946382 is a wasteful number, since it uses less digits than its factorization.

20946382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473193.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20946382 is about 4576.7217525211. The cubic root of 20946382 is about 275.6574111717.

The spelling of 20946382 in words is "twenty million, nine hundred forty-six thousand, three hundred eighty-two".