20039975 has 12 divisors (see below), whose sum is σ = 24924000. Its totient is φ = 15984000.

The previous prime is 20039959. The next prime is 20039983. The reversal of 20039975 is 57993002.

It is not a de Polignac number, because 20039975 - 2⁴ = 20039959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9026 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (2077000).

Almost surely, 2^20039975 is an apocalyptic number.

20039975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20039975 is a deficient number, since it is larger than the sum of its proper divisors (4884025).

20039975 is a wasteful number, since it uses less digits than its factorization.

20039975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20039975 is about 4476.6030648249. The cubic root of 20039975 is about 271.6224893768.

It can be divided in two parts, 2003997 and 5, that added together give a palindrome (2004002).

The spelling of 20039975 in words is "twenty million, thirty-nine thousand, nine hundred seventy-five".