22026278 has 4 divisors (see below), whose sum is σ = 33039420. Its totient is φ = 11013138.

The previous prime is 22026269. The next prime is 22026281. The reversal of 22026278 is 87262022.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22026278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506568 + ... + 5506571.

It is an arithmetic number, because the mean of its divisors is an integer number (8259855).

Almost surely, 2^22026278 is an apocalyptic number.

22026278 is a deficient number, since it is larger than the sum of its proper divisors (11013142).

22026278 is a wasteful number, since it uses less digits than its factorization.

22026278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11013141.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 22026278 is about 4693.2161680451. The cubic root of 22026278 is about 280.3154522963.

It can be divided in two parts, 2202627 and 8, that multiplied together give a triangular number (17621016 = T₅₉₃₆).

The spelling of 22026278 in words is "twenty-two million, twenty-six thousand, two hundred seventy-eight".