2263138 has 4 divisors (see below), whose sum is σ = 3394710. Its totient is φ = 1131568.

The previous prime is 2263117. The next prime is 2263139. The reversal of 2263138 is 8313622.

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., 1216609 + 1046529 = 1103^2 + 1023^2 .

It is not an unprimeable number, because it can be changed into a prime (2263139) 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, 565783 + ... + 565786.

2^2263138 is an apocalyptic number.

2263138 is a deficient number, since it is larger than the sum of its proper divisors (1131572).

2263138 is a wasteful number, since it uses less digits than its factorization.

2263138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131571.

The product of its digits is 1728, while the sum is 25.

The square root of 2263138 is about 1504.3729590763. The cubic root of 2263138 is about 131.2916215692.

It can be divided in two parts, 2263 and 138, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2263138 in words is "two million, two hundred sixty-three thousand, one hundred thirty-eight".