28366039 has 8 divisors (see below), whose sum is σ = 30590000. Its totient is φ = 26148096.

The previous prime is 28366033. The next prime is 28366043. The reversal of 28366039 is 93066382.

It is a happy number.

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

It is not a de Polignac number, because 28366039 - 2¹⁷ = 28234967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28365989 and 28366007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28366033) 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, 15364 + ... + 17110.

It is an arithmetic number, because the mean of its divisors is an integer number (3823750).

Almost surely, 2^28366039 is an apocalyptic number.

28366039 is a deficient number, since it is larger than the sum of its proper divisors (2223961).

28366039 is a wasteful number, since it uses less digits than its factorization.

28366039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 28366039 is about 5325.9777506107. The cubic root of 28366039 is about 304.9763987829.

The spelling of 28366039 in words is "twenty-eight million, three hundred sixty-six thousand, thirty-nine".