20642096 has 10 divisors (see below), whose sum is σ = 39994092. Its totient is φ = 10321040.

The previous prime is 20642059. The next prime is 20642099. The reversal of 20642096 is 69024602.

It is a super-2 number, since 2×20642096² = 852192254546432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20642099) by changing a digit.

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 as a sum of consecutive naturals, namely, 645050 + ... + 645081.

Almost surely, 2^20642096 is an apocalyptic number.

It is an amenable number.

20642096 is a deficient number, since it is larger than the sum of its proper divisors (19351996).

20642096 is a wasteful number, since it uses less digits than its factorization.

20642096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290139 (or 1290133 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20642096 is about 4543.3573489216. The cubic root of 20642096 is about 274.3160790210.

Adding to 20642096 its reverse (69024602), we get a palindrome (89666698).

The spelling of 20642096 in words is "twenty million, six hundred forty-two thousand, ninety-six".