20146075 has 6 divisors (see below), whose sum is σ = 24981164. Its totient is φ = 16116840.

The previous prime is 20146073. The next prime is 20146109. The reversal of 20146075 is 57064102.

It is not a de Polignac number, because 20146075 - 2¹ = 20146073 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: 805843 = 20146075 / (2 + 0 + 1 + 4 + 6 + 0 + 7 + 5).

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20146073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402897 + ... + 402946.

Almost surely, 2^20146075 is an apocalyptic number.

20146075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20146075 is a deficient number, since it is larger than the sum of its proper divisors (4835089).

20146075 is an equidigital number, since it uses as much as digits as its factorization.

20146075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805853 (or 805848 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20146075 is about 4488.4379242672. The cubic root of 20146075 is about 272.1010068565.

The spelling of 20146075 in words is "twenty million, one hundred forty-six thousand, seventy-five".