20632075 has 6 divisors (see below), whose sum is σ = 25583804. Its totient is φ = 16505640.

The previous prime is 20632037. The next prime is 20632093. The reversal of 20632075 is 57023602.

It is not a de Polignac number, because 20632075 - 2⁹ = 20631563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 825283 = 20632075 / (2 + 0 + 6 + 3 + 2 + 0 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412617 + ... + 412666.

Almost surely, 2^20632075 is an apocalyptic number.

20632075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20632075 is a deficient number, since it is larger than the sum of its proper divisors (4951729).

20632075 is an equidigital number, since it uses as much as digits as its factorization.

20632075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825293 (or 825288 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20632075 is about 4542.2543962222. The cubic root of 20632075 is about 274.2716816177.

Adding to 20632075 its reverse (57023602), we get a palindrome (77655677).

The spelling of 20632075 in words is "twenty million, six hundred thirty-two thousand, seventy-five".