20344942 has 8 divisors (see below), whose sum is σ = 30700656. Its totient is φ = 10111392.

The previous prime is 20344927. The next prime is 20344963. The reversal of 20344942 is 24944302.

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

It is a super-3 number, since 3×20344942³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20344942.

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 3 ways as a sum of consecutive naturals, for example, 30123 + ... + 30790.

It is an arithmetic number, because the mean of its divisors is an integer number (3837582).

Almost surely, 2^20344942 is an apocalyptic number.

20344942 is a deficient number, since it is larger than the sum of its proper divisors (10355714).

20344942 is a wasteful number, since it uses less digits than its factorization.

20344942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61082.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20344942 is about 4510.5367751522. The cubic root of 20344942 is about 272.9934028560.

The spelling of 20344942 in words is "twenty million, three hundred forty-four thousand, nine hundred forty-two".