20342651 has 8 divisors (see below), whose sum is σ = 23301120. Its totient is φ = 17397288.

The previous prime is 20342633. The next prime is 20342687. The reversal of 20342651 is 15624302.

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

It is a cyclic number.

It is not a de Polignac number, because 20342651 - 2¹⁰ = 20341627 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20342611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (2912640).

Almost surely, 2^20342651 is an apocalyptic number.

20342651 is a deficient number, since it is larger than the sum of its proper divisors (2958469).

20342651 is an equidigital number, since it uses as much as digits as its factorization.

20342651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20342651 is about 4510.2828070976. The cubic root of 20342651 is about 272.9831554054.

Adding to 20342651 its reverse (15624302), we get a palindrome (35966953).

The spelling of 20342651 in words is "twenty million, three hundred forty-two thousand, six hundred fifty-one".