28327838 has 32 divisors (see below), whose sum is σ = 54812160. Its totient is φ = 10654560.

The previous prime is 28327837. The next prime is 28327853. The reversal of 28327838 is 83872382.

It is a junction number, because it is equal to n+sod(n) for n = 28327795 and 28327804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28327837) 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, 1295 + ... + 7637.

It is an arithmetic number, because the mean of its divisors is an integer number (1712880).

Almost surely, 2^28327838 is an apocalyptic number.

28327838 is a deficient number, since it is larger than the sum of its proper divisors (26484322).

28327838 is a wasteful number, since it uses less digits than its factorization.

28327838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6392.

The product of its digits is 129024, while the sum is 41.

The square root of 28327838 is about 5322.3902525087. The cubic root of 28327838 is about 304.8394317422.

The spelling of 28327838 in words is "twenty-eight million, three hundred twenty-seven thousand, eight hundred thirty-eight".