28318838 has 16 divisors (see below), whose sum is σ = 46194624. Its totient is φ = 12965760.

The previous prime is 28318813. The next prime is 28318861. The reversal of 28318838 is 83881382.

It is a junction number, because it is equal to n+sod(n) for n = 28318795 and 28318804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9998 + ... + 12513.

It is an arithmetic number, because the mean of its divisors is an integer number (2887164).

Almost surely, 2^28318838 is an apocalyptic number.

28318838 is a deficient number, since it is larger than the sum of its proper divisors (17875786).

28318838 is a wasteful number, since it uses less digits than its factorization.

28318838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22567.

The product of its digits is 73728, while the sum is 41.

The square root of 28318838 is about 5321.5447005545. The cubic root of 28318838 is about 304.8071449449.

The spelling of 28318838 in words is "twenty-eight million, three hundred eighteen thousand, eight hundred thirty-eight".