22276778 has 16 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 10326816.

The previous prime is 22276769. The next prime is 22276781. The reversal of 22276778 is 87767222.

It is a super-2 number, since 2×22276778² = 992509676122568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4451 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 2^22276778 is an apocalyptic number.

22276778 is a deficient number, since it is larger than the sum of its proper divisors (13648342).

22276778 is a wasteful number, since it uses less digits than its factorization.

22276778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541.

The product of its digits is 131712, while the sum is 41.

The square root of 22276778 is about 4719.8281748386. The cubic root of 22276778 is about 281.3741043737.

The spelling of 22276778 in words is "twenty-two million, two hundred seventy-six thousand, seven hundred seventy-eight".