20653342 has 8 divisors (see below), whose sum is σ = 32610600. Its totient is φ = 9783144.

The previous prime is 20653331. The next prime is 20653357. The reversal of 20653342 is 24335602.

It is a happy number.

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

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, 271717 + ... + 271792.

It is an arithmetic number, because the mean of its divisors is an integer number (4076325).

Almost surely, 2^20653342 is an apocalyptic number.

20653342 is a deficient number, since it is larger than the sum of its proper divisors (11957258).

20653342 is a wasteful number, since it uses less digits than its factorization.

20653342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543530.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20653342 is about 4544.5948114216. The cubic root of 20653342 is about 274.3658866012.

Adding to 20653342 its reverse (24335602), we get a palindrome (44988944).

The spelling of 20653342 in words is "twenty million, six hundred fifty-three thousand, three hundred forty-two".