2238747 has 16 divisors (see below), whose sum is σ = 3612672. Its totient is φ = 1203840.

The previous prime is 2238721. The next prime is 2238749. The reversal of 2238747 is 7478322.

It is not a de Polignac number, because 2238747 - 2⁷ = 2238619 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 2²¹ + 3⁸ + 8³ + 7⁵ + 4³ + 7⁶ .

It is not an unprimeable number, because it can be changed into a prime (2238749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2779 + ... + 3492.

It is an arithmetic number, because the mean of its divisors is an integer number (225792).

2^2238747 is an apocalyptic number.

2238747 is a deficient number, since it is larger than the sum of its proper divisors (1373925).

2238747 is a wasteful number, since it uses less digits than its factorization.

2238747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298.

The product of its digits is 18816, while the sum is 33.

The square root of 2238747 is about 1496.2442982348. The cubic root of 2238747 is about 130.8182511543.

The spelling of 2238747 in words is "two million, two hundred thirty-eight thousand, seven hundred forty-seven".