20078022 has 16 divisors (see below), whose sum is σ = 42269760. Its totient is φ = 6340392.

The previous prime is 20078021. The next prime is 20078027. The reversal of 20078022 is 22087002.

It is a self number, because there is not a number n which added to its sum of digits gives 20078022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20078021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87948 + ... + 88175.

It is an arithmetic number, because the mean of its divisors is an integer number (2641860).

Almost surely, 2^20078022 is an apocalyptic number.

20078022 is an abundant number, since it is smaller than the sum of its proper divisors (22191738).

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

20078022 is a wasteful number, since it uses less digits than its factorization.

20078022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176147.

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

The square root of 20078022 is about 4480.8505888949. The cubic root of 20078022 is about 271.7942774751.

The spelling of 20078022 in words is "twenty million, seventy-eight thousand, twenty-two".