20634275 has 18 divisors (see below), whose sum is σ = 26279196. Its totient is φ = 16072000.

The previous prime is 20634259. The next prime is 20634293. The reversal of 20634275 is 57243602.

It is not a de Polignac number, because 20634275 - 2⁴ = 20634259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41780 + ... + 42270.

Almost surely, 2^20634275 is an apocalyptic number.

20634275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20634275 is a deficient number, since it is larger than the sum of its proper divisors (5644921).

20634275 is an equidigital number, since it uses as much as digits as its factorization.

20634275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20634275 is about 4542.4965602629. The cubic root of 20634275 is about 274.2814298092.

Adding to 20634275 its reverse (57243602), we get a palindrome (77877877).

The spelling of 20634275 in words is "twenty million, six hundred thirty-four thousand, two hundred seventy-five".