2238904 has 8 divisors (see below), whose sum is σ = 4197960. Its totient is φ = 1119448.

The previous prime is 2238823. The next prime is 2238931. The reversal of 2238904 is 4098322.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2238904² = 10025382242432, 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 as a sum of consecutive naturals, namely, 139924 + ... + 139939.

It is an arithmetic number, because the mean of its divisors is an integer number (524745).

2^2238904 is an apocalyptic number.

It is an amenable number.

2238904 is a deficient number, since it is larger than the sum of its proper divisors (1959056).

2238904 is a wasteful number, since it uses less digits than its factorization.

2238904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279869 (or 279865 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2238904 is about 1496.2967620095. The cubic root of 2238904 is about 130.8213091126.

The spelling of 2238904 in words is "two million, two hundred thirty-eight thousand, nine hundred four".