20950075 has 6 divisors (see below), whose sum is σ = 25978124. Its totient is φ = 16760040.

The previous prime is 20950063. The next prime is 20950081. The reversal of 20950075 is 57005902.

It is not a de Polignac number, because 20950075 - 2⁹ = 20949563 is a prime.

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, 418977 + ... + 419026.

Almost surely, 2^20950075 is an apocalyptic number.

20950075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20950075 is a deficient number, since it is larger than the sum of its proper divisors (5028049).

20950075 is an equidigital number, since it uses as much as digits as its factorization.

20950075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838013 (or 838008 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 20950075 is about 4577.1251894612. The cubic root of 20950075 is about 275.6736103574.

Adding to 20950075 its reverse (57005902), we get a palindrome (77955977).

The spelling of 20950075 in words is "twenty million, nine hundred fifty thousand, seventy-five".