20648353 has 8 divisors (see below), whose sum is σ = 23850720. Its totient is φ = 17666880.

The previous prime is 20648333. The next prime is 20648357. The reversal of 20648353 is 35384602.

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

It is not a de Polignac number, because 20648353 - 2⁵ = 20648321 is a prime.

It is a super-2 number, since 2×20648353² = 852708963225218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20648357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55023 + ... + 55396.

It is an arithmetic number, because the mean of its divisors is an integer number (2981340).

Almost surely, 2^20648353 is an apocalyptic number.

It is an amenable number.

20648353 is a deficient number, since it is larger than the sum of its proper divisors (3202367).

20648353 is a wasteful number, since it uses less digits than its factorization.

20648353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110447.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 20648353 is about 4544.0458844514. The cubic root of 20648353 is about 274.3437929752.

The spelling of 20648353 in words is "twenty million, six hundred forty-eight thousand, three hundred fifty-three".