28744067 has 8 divisors (see below), whose sum is σ = 31532592. Its totient is φ = 25984800.

The previous prime is 28744057. The next prime is 28744087. The reversal of 28744067 is 76044782.

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 28744067 - 2⁶ = 28744003 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 28744067.

It is not an unprimeable number, because it can be changed into a prime (28744007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5228 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (3941574).

Almost surely, 2^28744067 is an apocalyptic number.

28744067 is a deficient number, since it is larger than the sum of its proper divisors (2788525).

28744067 is a wasteful number, since it uses less digits than its factorization.

28744067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14629.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 28744067 is about 5361.3493637330. The cubic root of 28744067 is about 306.3252092392.

The spelling of 28744067 in words is "twenty-eight million, seven hundred forty-four thousand, sixty-seven".