20073578 has 16 divisors (see below), whose sum is σ = 34646400. Its totient is φ = 8544336.

The previous prime is 20073577. The next prime is 20073589. The reversal of 20073578 is 87537002.

It is not an unprimeable number, because it can be changed into a prime (20073577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (2165400).

Almost surely, 2^20073578 is an apocalyptic number.

20073578 is a deficient number, since it is larger than the sum of its proper divisors (14572822).

20073578 is a wasteful number, since it uses less digits than its factorization.

20073578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20073578 is about 4480.3546734606. The cubic root of 20073578 is about 271.7742233268.

The spelling of 20073578 in words is "twenty million, seventy-three thousand, five hundred seventy-eight".