20948168 has 8 divisors (see below), whose sum is σ = 39277830. Its totient is φ = 10474080.

The previous prime is 20948167. The next prime is 20948173. The reversal of 20948168 is 86184902.

It can be written as a sum of positive squares in only one way, i.e., 16630084 + 4318084 = 4078^2 + 2078^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×20948168³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20948167) 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, 1309253 + ... + 1309268.

Almost surely, 2^20948168 is an apocalyptic number.

It is an amenable number.

20948168 is a deficient number, since it is larger than the sum of its proper divisors (18329662).

20948168 is a wasteful number, since it uses less digits than its factorization.

20948168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618527 (or 2618523 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 20948168 is about 4576.9168661884. The cubic root of 20948168 is about 275.6652456216.

The spelling of 20948168 in words is "twenty million, nine hundred forty-eight thousand, one hundred sixty-eight".