20922078 has 16 divisors (see below), whose sum is σ = 44046720. Its totient is φ = 6606936.

The previous prime is 20922073. The next prime is 20922091. The reversal of 20922078 is 87022902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91650 + ... + 91877.

It is an arithmetic number, because the mean of its divisors is an integer number (2752920).

Almost surely, 2^20922078 is an apocalyptic number.

20922078 is an abundant number, since it is smaller than the sum of its proper divisors (23124642).

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

20922078 is a wasteful number, since it uses less digits than its factorization.

20922078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183551.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20922078 is about 4574.0658062603. The cubic root of 20922078 is about 275.5507551940.

The spelling of 20922078 in words is "twenty million, nine hundred twenty-two thousand, seventy-eight".