28938367 has 4 divisors (see below), whose sum is σ = 29062800. Its totient is φ = 28813936.

The previous prime is 28938313. The next prime is 28938383. The reversal of 28938367 is 76383982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76383982 = 2 ⋅38191991.

It is a cyclic number.

It is not a de Polignac number, because 28938367 - 2¹⁵ = 28905599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28938307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61867 + ... + 62332.

It is an arithmetic number, because the mean of its divisors is an integer number (7265700).

Almost surely, 2^28938367 is an apocalyptic number.

28938367 is a deficient number, since it is larger than the sum of its proper divisors (124433).

28938367 is a wasteful number, since it uses less digits than its factorization.

28938367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124432.

The product of its digits is 435456, while the sum is 46.

The square root of 28938367 is about 5379.4392830480. The cubic root of 28938367 is about 307.0138775040.

The spelling of 28938367 in words is "twenty-eight million, nine hundred thirty-eight thousand, three hundred sixty-seven".