20220635 has 8 divisors (see below), whose sum is σ = 24597600. Its totient is φ = 15954624.

The previous prime is 20220631. The next prime is 20220637. The reversal of 20220635 is 53602202.

It is a happy number.

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 20220635 - 2² = 20220631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20220631) 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 in 7 ways as a sum of consecutive naturals, for example, 27335 + ... + 28064.

It is an arithmetic number, because the mean of its divisors is an integer number (3074700).

Almost surely, 2^20220635 is an apocalyptic number.

20220635 is a deficient number, since it is larger than the sum of its proper divisors (4376965).

20220635 is an equidigital number, since it uses as much as digits as its factorization.

20220635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55477.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20220635 is about 4496.7360385062. The cubic root of 20220635 is about 272.4362727279.

Adding to 20220635 its reverse (53602202), we get a palindrome (73822837).

The spelling of 20220635 in words is "twenty million, two hundred twenty thousand, six hundred thirty-five".