2232778 has 16 divisors (see below), whose sum is σ = 3487176. Its totient is φ = 1071360.

The previous prime is 2232773. The next prime is 2232779. The reversal of 2232778 is 8772322.

2232778 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 4 ways, for example, as 1481089 + 751689 = 1217^2 + 867^2 .

It is a super-3 number, since 3×2232778³ = 33393188396005724856, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5800 + ... + 6172.

2^2232778 is an apocalyptic number.

2232778 is a deficient number, since it is larger than the sum of its proper divisors (1254398).

2232778 is a wasteful number, since it uses less digits than its factorization.

2232778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

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

The square root of 2232778 is about 1494.2483060054. The cubic root of 2232778 is about 130.7018841049.

The spelling of 2232778 in words is "two million, two hundred thirty-two thousand, seven hundred seventy-eight".