22032778 has 8 divisors (see below), whose sum is σ = 33072768. Its totient is φ = 11008524.

The previous prime is 22032767. The next prime is 22032793. The reversal of 22032778 is 87723022.

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

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, 625 + ... + 6667.

It is an arithmetic number, because the mean of its divisors is an integer number (4134096).

Almost surely, 2^22032778 is an apocalyptic number.

22032778 is a deficient number, since it is larger than the sum of its proper divisors (11039990).

22032778 is a wasteful number, since it uses less digits than its factorization.

22032778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7868.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 22032778 is about 4693.9086058423. The cubic root of 22032778 is about 280.3430234734.

The spelling of 22032778 in words is "twenty-two million, thirty-two thousand, seven hundred seventy-eight".