22122678 has 32 divisors (see below), whose sum is σ = 47309184. Its totient is φ = 6872192.

The previous prime is 22122671. The next prime is 22122689. The reversal of 22122678 is 87622122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122671) 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 15 ways as a sum of consecutive naturals, for example, 9901 + ... + 11927.

It is an arithmetic number, because the mean of its divisors is an integer number (1478412).

Almost surely, 2^22122678 is an apocalyptic number.

22122678 is an abundant number, since it is smaller than the sum of its proper divisors (25186506).

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

22122678 is a wasteful number, since it uses less digits than its factorization.

22122678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156.

The product of its digits is 5376, while the sum is 30.

The square root of 22122678 is about 4703.4750982651. The cubic root of 22122678 is about 280.7237991380.

The spelling of 22122678 in words is "twenty-two million, one hundred twenty-two thousand, six hundred seventy-eight".