22278057 has 16 divisors (see below), whose sum is σ = 30789120. Its totient is φ = 14313600.

The previous prime is 22278037. The next prime is 22278071. The reversal of 22278057 is 75087222.

It is not a de Polignac number, because 22278057 - 2⁷ = 22277929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22278017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38869 + ... + 39437.

It is an arithmetic number, because the mean of its divisors is an integer number (1924320).

Almost surely, 2^22278057 is an apocalyptic number.

It is an amenable number.

22278057 is a deficient number, since it is larger than the sum of its proper divisors (8511063).

22278057 is a wasteful number, since it uses less digits than its factorization.

22278057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 22278057 is about 4719.9636651144. The cubic root of 22278057 is about 281.3794892127.

The spelling of 22278057 in words is "twenty-two million, two hundred seventy-eight thousand, fifty-seven".