22145678 has 8 divisors (see below), whose sum is σ = 34966920. Its totient is φ = 10490040.

The previous prime is 22145663. The next prime is 22145723. The reversal of 22145678 is 87654122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 291353 + ... + 291428.

It is an arithmetic number, because the mean of its divisors is an integer number (4370865).

Almost surely, 2^22145678 is an apocalyptic number.

22145678 is a deficient number, since it is larger than the sum of its proper divisors (12821242).

22145678 is a wasteful number, since it uses less digits than its factorization.

22145678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582802.

The product of its digits is 26880, while the sum is 35.

The square root of 22145678 is about 4705.9194638243. The cubic root of 22145678 is about 280.8210509430.

The spelling of 22145678 in words is "twenty-two million, one hundred forty-five thousand, six hundred seventy-eight".