2222578 has 4 divisors (see below), whose sum is σ = 3333870. Its totient is φ = 1111288.

The previous prime is 2222573. The next prime is 2222579. The reversal of 2222578 is 8752222.

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., 2064969 + 157609 = 1437^2 + 397^2 .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2222573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555643 + ... + 555646.

2^2222578 is an apocalyptic number.

2222578 is a deficient number, since it is larger than the sum of its proper divisors (1111292).

2222578 is a wasteful number, since it uses less digits than its factorization.

2222578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111291.

The product of its digits is 4480, while the sum is 28.

The square root of 2222578 is about 1490.8313117184. The cubic root of 2222578 is about 130.5025517819.

The spelling of 2222578 in words is "two million, two hundred twenty-two thousand, five hundred seventy-eight".