20015342 has 8 divisors (see below), whose sum is σ = 30189432. Its totient is φ = 9952200.

The previous prime is 20015329. The next prime is 20015353. The reversal of 20015342 is 24351002.

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

It is a super-2 number, since 2×20015342² = 801227830753928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20015342.

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, 27284 + ... + 28007.

It is an arithmetic number, because the mean of its divisors is an integer number (3773679).

Almost surely, 2^20015342 is an apocalyptic number.

20015342 is a deficient number, since it is larger than the sum of its proper divisors (10174090).

20015342 is a wasteful number, since it uses less digits than its factorization.

20015342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55474.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20015342 is about 4473.8509139219. The cubic root of 20015342 is about 271.5111515780.

Adding to 20015342 its reverse (24351002), we get a palindrome (44366344).

The spelling of 20015342 in words is "twenty million, fifteen thousand, three hundred forty-two".