2242378 has 4 divisors (see below), whose sum is σ = 3363570. Its totient is φ = 1121188.

The previous prime is 2242369. The next prime is 2242379. The reversal of 2242378 is 8732422.

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., 2241009 + 1369 = 1497^2 + 37^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2242379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560593 + ... + 560596.

2^2242378 is an apocalyptic number.

2242378 is a deficient number, since it is larger than the sum of its proper divisors (1121192).

2242378 is a wasteful number, since it uses less digits than its factorization.

2242378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121191.

The product of its digits is 5376, while the sum is 28.

The square root of 2242378 is about 1497.4571780188. The cubic root of 2242378 is about 130.8889371974. Note that the first 3 decimals are identical.

The spelling of 2242378 in words is "two million, two hundred forty-two thousand, three hundred seventy-eight".