20202078 has 16 divisors (see below), whose sum is σ = 43512336. Its totient is φ = 6216000.

The previous prime is 20202071. The next prime is 20202097. The reversal of 20202078 is 87020202.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202071) 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, 129423 + ... + 129578.

It is an arithmetic number, because the mean of its divisors is an integer number (2719521).

Almost surely, 2^20202078 is an apocalyptic number.

20202078 is an abundant number, since it is smaller than the sum of its proper divisors (23310258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202078 is a wasteful number, since it uses less digits than its factorization.

20202078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259019.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20202078 is about 4494.6721793697. The cubic root of 20202078 is about 272.3529066145.

The spelling of 20202078 in words is "twenty million, two hundred two thousand, seventy-eight".