2238406 has 8 divisors (see below), whose sum is σ = 3503664. Its totient is φ = 1070520.

The previous prime is 2238391. The next prime is 2238413. The reversal of 2238406 is 6048322.

It is a happy number.

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

It is a super-2 number, since 2×2238406² = 10020922841672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24285 + ... + 24376.

It is an arithmetic number, because the mean of its divisors is an integer number (437958).

2^2238406 is an apocalyptic number.

2238406 is a deficient number, since it is larger than the sum of its proper divisors (1265258).

2238406 is a wasteful number, since it uses less digits than its factorization.

2238406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48686.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2238406 is about 1496.1303419154. The cubic root of 2238406 is about 130.8116088541.

The spelling of 2238406 in words is "two million, two hundred thirty-eight thousand, four hundred six".