22412778 has 16 divisors (see below), whose sum is σ = 44914080. Its totient is φ = 7456176.

The previous prime is 22412771. The next prime is 22412813. The reversal of 22412778 is 87721422.

It is not an unprimeable number, because it can be changed into a prime (22412771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 6696.

It is an arithmetic number, because the mean of its divisors is an integer number (2807130).

Almost surely, 2^22412778 is an apocalyptic number.

22412778 is an abundant number, since it is smaller than the sum of its proper divisors (22501302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22412778 is a wasteful number, since it uses less digits than its factorization.

22412778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381.

The product of its digits is 12544, while the sum is 33.

The square root of 22412778 is about 4734.2135566533. The cubic root of 22412778 is about 281.9455405121.

The spelling of 22412778 in words is "twenty-two million, four hundred twelve thousand, seven hundred seventy-eight".