22028678 has 8 divisors (see below), whose sum is σ = 37763472. Its totient is φ = 9440856.

The previous prime is 22028663. The next prime is 22028689. The reversal of 22028678 is 87682022.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786725 + ... + 786752.

It is an arithmetic number, because the mean of its divisors is an integer number (4720434).

Almost surely, 2^22028678 is an apocalyptic number.

22028678 is a deficient number, since it is larger than the sum of its proper divisors (15734794).

22028678 is a wasteful number, since it uses less digits than its factorization.

22028678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573486.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 22028678 is about 4693.4718492817. The cubic root of 22028678 is about 280.3256330548.

The spelling of 22028678 in words is "twenty-two million, twenty-eight thousand, six hundred seventy-eight".