2238506 has 8 divisors (see below), whose sum is σ = 3379620. Its totient is φ = 1111968.

The previous prime is 2238491. The next prime is 2238527. The reversal of 2238506 is 6058322.

It can be written as a sum of positive squares in 2 ways, for example, as 2235025 + 3481 = 1495^2 + 59^2 .

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

It is a super-2 number, since 2×2238506² = 10021818224072, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁸ + 2¹⁴ + 3⁸ + 8⁶ + 5⁹ + 0 + 6² .

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3251 + ... + 3878.

2^2238506 is an apocalyptic number.

2238506 is a deficient number, since it is larger than the sum of its proper divisors (1141114).

2238506 is a wasteful number, since it uses less digits than its factorization.

2238506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2238506 is about 1496.1637610903. The cubic root of 2238506 is about 130.8135568126.

It can be divided in two parts, 2238 and 506, that added together give a cube (2744 = 14³).

The spelling of 2238506 in words is "two million, two hundred thirty-eight thousand, five hundred six".