20318942 has 16 divisors (see below), whose sum is σ = 36666240. Its totient is φ = 8249688.

The previous prime is 20318939. The next prime is 20318953. The reversal of 20318942 is 24981302.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 37928 + ... + 38459.

It is an arithmetic number, because the mean of its divisors is an integer number (2291640).

Almost surely, 2^20318942 is an apocalyptic number.

20318942 is a deficient number, since it is larger than the sum of its proper divisors (16347298).

20318942 is a wasteful number, since it uses less digits than its factorization.

20318942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76415.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20318942 is about 4507.6537134079. The cubic root of 20318942 is about 272.8770618312.

The spelling of 20318942 in words is "twenty million, three hundred eighteen thousand, nine hundred forty-two".