2238658 has 8 divisors (see below), whose sum is σ = 3365820. Its totient is φ = 1116720.

The previous prime is 2238653. The next prime is 2238661. The reversal of 2238658 is 8568322.

It can be written as a sum of positive squares in 2 ways, for example, as 2111209 + 127449 = 1453^2 + 357^2 .

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

It is a d-powerful number, because it can be written as 2² + 2⁸ + 3⁶ + 8³ + 6⁷ + 5⁹ + 8⁴ .

It is not an unprimeable number, because it can be changed into a prime (2238653) 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 in 3 ways as a sum of consecutive naturals, for example, 48 + ... + 2116.

2^2238658 is an apocalyptic number.

2238658 is a deficient number, since it is larger than the sum of its proper divisors (1127162).

2238658 is a wasteful number, since it uses less digits than its factorization.

2238658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 23040, while the sum is 34.

The square root of 2238658 is about 1496.2145568066. The cubic root of 2238658 is about 130.8165175984.

The spelling of 2238658 in words is "two million, two hundred thirty-eight thousand, six hundred fifty-eight".