20593942 has 4 divisors (see below), whose sum is σ = 30890916. Its totient is φ = 10296970.

The previous prime is 20593933. The next prime is 20593949. The reversal of 20593942 is 24939502.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20593942² = 848220894198728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20593898 and 20593907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593949) by changing a digit.

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 as a sum of consecutive naturals, namely, 5148484 + ... + 5148487.

It is an arithmetic number, because the mean of its divisors is an integer number (7722729).

Almost surely, 2^20593942 is an apocalyptic number.

20593942 is a deficient number, since it is larger than the sum of its proper divisors (10296974).

20593942 is a wasteful number, since it uses less digits than its factorization.

20593942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296973.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20593942 is about 4538.0548696551. The cubic root of 20593942 is about 274.1026042286.

The spelling of 20593942 in words is "twenty million, five hundred ninety-three thousand, nine hundred forty-two".