20022678 has 48 divisors (see below), whose sum is σ = 47882016. Its totient is φ = 6007680.

The previous prime is 20022677. The next prime is 20022689. The reversal of 20022678 is 87622002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022677) 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 23 ways as a sum of consecutive naturals, for example, 8551 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 2^20022678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23941008).

20022678 is an abundant number, since it is smaller than the sum of its proper divisors (27859338).

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

20022678 is a wasteful number, since it uses less digits than its factorization.

20022678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149 (or 2146 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20022678 is about 4474.6707141420. The cubic root of 20022678 is about 271.5443188439.

The spelling of 20022678 in words is "twenty million, twenty-two thousand, six hundred seventy-eight".