26222978 has 4 divisors (see below), whose sum is σ = 39334470. Its totient is φ = 13111488.

The previous prime is 26222953. The next prime is 26223011. The reversal of 26222978 is 87922262.

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

It can be written as a sum of positive squares in only one way, i.e., 14615329 + 11607649 = 3823^2 + 3407^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555743 + ... + 6555746.

Almost surely, 2^26222978 is an apocalyptic number.

26222978 is a deficient number, since it is larger than the sum of its proper divisors (13111492).

26222978 is a wasteful number, since it uses less digits than its factorization.

26222978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111491.

The product of its digits is 48384, while the sum is 38.

The square root of 26222978 is about 5120.8376267951. The cubic root of 26222978 is about 297.0940837944.

The spelling of 26222978 in words is "twenty-six million, two hundred twenty-two thousand, nine hundred seventy-eight".