20673275 has 24 divisors (see below), whose sum is σ = 31024800. Its totient is φ = 13340160.

The previous prime is 20673271. The next prime is 20673281. The reversal of 20673275 is 57237602.

It is a happy number.

It is not a de Polignac number, because 20673275 - 2² = 20673271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20673271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (1292700).

Almost surely, 2^20673275 is an apocalyptic number.

20673275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20673275 is a deficient number, since it is larger than the sum of its proper divisors (10351525).

20673275 is a wasteful number, since it uses less digits than its factorization.

20673275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6983 (or 6978 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 20673275 is about 4546.7873273334. The cubic root of 20673275 is about 274.4541237617.

The spelling of 20673275 in words is "twenty million, six hundred seventy-three thousand, two hundred seventy-five".