2236778 has 8 divisors (see below), whose sum is σ = 3364740. Its totient is φ = 1115200.

The previous prime is 2236771. The next prime is 2236781. The reversal of 2236778 is 8776322.

It can be written as a sum of positive squares in 2 ways, for example, as 1885129 + 351649 = 1373^2 + 593^2 .

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

It is an Ulam number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2236771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593 + ... + 2196.

2^2236778 is an apocalyptic number.

2236778 is a deficient number, since it is larger than the sum of its proper divisors (1127962).

2236778 is a wasteful number, since it uses less digits than its factorization.

2236778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192.

The product of its digits is 28224, while the sum is 35.

The square root of 2236778 is about 1495.5861727096. The cubic root of 2236778 is about 130.7798879257.

The spelling of 2236778 in words is "two million, two hundred thirty-six thousand, seven hundred seventy-eight".