22288426 has 8 divisors (see below), whose sum is σ = 34886304. Its totient is φ = 10659660.

The previous prime is 22288397. The next prime is 22288439. The reversal of 22288426 is 62488222.

22288426 = 534² + 535² + ... + 602².

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

It is a junction number, because it is equal to n+sod(n) for n = 22288391 and 22288400.

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, 242220 + ... + 242311.

It is an arithmetic number, because the mean of its divisors is an integer number (4360788).

Almost surely, 2^22288426 is an apocalyptic number.

22288426 is a deficient number, since it is larger than the sum of its proper divisors (12597878).

22288426 is a wasteful number, since it uses less digits than its factorization.

22288426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484556.

The product of its digits is 24576, while the sum is 34.

The square root of 22288426 is about 4721.0619568059. The cubic root of 22288426 is about 281.4231371153.

It can be divided in two parts, 2228 and 8426, that multiplied together give a triangular number (18773128 = T₆₁₂₇).

The spelling of 22288426 in words is "twenty-two million, two hundred eighty-eight thousand, four hundred twenty-six".