20000075 has 12 divisors (see below), whose sum is σ = 26259480. Its totient is φ = 15058560.

The previous prime is 20000069. The next prime is 20000077. The reversal of 20000075 is 57000002.

It is not a de Polignac number, because 20000075 - 2⁴ = 20000059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23105 + ... + 23954.

It is an arithmetic number, because the mean of its divisors is an integer number (2188290).

Almost surely, 2^20000075 is an apocalyptic number.

20000075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20000075 is a deficient number, since it is larger than the sum of its proper divisors (6259405).

20000075 is a wasteful number, since it uses less digits than its factorization.

20000075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47086 (or 47081 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 20000075 is about 4472.1443402466. The cubic root of 20000075 is about 271.4421009613.

Adding to 20000075 its reverse (57000002), we get a palindrome (77000077).

The spelling of 20000075 in words is "twenty million, seventy-five", and thus it is an aban number and an uban number.