20673075 has 12 divisors (see below), whose sum is σ = 34179608. Its totient is φ = 11025600.

The previous prime is 20673019. The next prime is 20673077. The reversal of 20673075 is 57037602.

It is not a de Polignac number, because 20673075 - 2⁷ = 20672947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20673077) 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, 137746 + ... + 137895.

Almost surely, 2^20673075 is an apocalyptic number.

20673075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20673075 is a deficient number, since it is larger than the sum of its proper divisors (13506533).

20673075 is a wasteful number, since it uses less digits than its factorization.

20673075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275654 (or 275649 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 20673075 is about 4546.7653337290. The cubic root of 20673075 is about 274.4532387060.

The spelling of 20673075 in words is "twenty million, six hundred seventy-three thousand, seventy-five".