28367551 has 8 divisors (see below), whose sum is σ = 29913200. Its totient is φ = 26827200.

The previous prime is 28367527. The next prime is 28367569. The reversal of 28367551 is 15576382.

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

It is a cyclic number.

It is not a de Polignac number, because 28367551 - 2¹⁵ = 28334783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28367551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28367351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14851 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (3739150).

Almost surely, 2^28367551 is an apocalyptic number.

28367551 is a deficient number, since it is larger than the sum of its proper divisors (1545649).

28367551 is a wasteful number, since it uses less digits than its factorization.

28367551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649.

The product of its digits is 50400, while the sum is 37.

The square root of 28367551 is about 5326.1196944868. The cubic root of 28367551 is about 304.9818174236.

The spelling of 28367551 in words is "twenty-eight million, three hundred sixty-seven thousand, five hundred fifty-one".