2231888 has 10 divisors (see below), whose sum is σ = 4324314. Its totient is φ = 1115936.

The previous prime is 2231881. The next prime is 2231891. The reversal of 2231888 is 8881322.

It can be written as a sum of positive squares in only one way, i.e., 1993744 + 238144 = 1412^2 + 488^2 .

It is a super-3 number, since 3×2231888³ = 33353272077387657216, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69731 + ... + 69762.

2^2231888 is an apocalyptic number.

It is an amenable number.

2231888 is a deficient number, since it is larger than the sum of its proper divisors (2092426).

2231888 is a wasteful number, since it uses less digits than its factorization.

2231888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139501 (or 139495 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 2231888 is about 1493.9504677197. The cubic root of 2231888 is about 130.6845155866.

The spelling of 2231888 in words is "two million, two hundred thirty-one thousand, eight hundred eighty-eight".