20422278408 has 96 divisors (see below), whose sum is σ = 60398157600. Its totient is φ = 5736019968.

The previous prime is 20422278407. The next prime is 20422278469. The reversal of 20422278408 is 80487222402.

It is not an unprimeable number, because it can be changed into a prime (20422278407) 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 23 ways as a sum of consecutive naturals, for example, 77785 + ... + 216552.

It is an arithmetic number, because the mean of its divisors is an integer number (629147475).

Almost surely, 2^20422278408 is an apocalyptic number.

20422278408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20422278408 is an abundant number, since it is smaller than the sum of its proper divisors (39975879192).

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

20422278408 is a wasteful number, since it uses less digits than its factorization.

20422278408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294419 (or 294408 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 39.

The spelling of 20422278408 in words is "twenty billion, four hundred twenty-two million, two hundred seventy-eight thousand, four hundred eight".