28438067 has 16 divisors (see below), whose sum is σ = 34713600. Its totient is φ = 22770720.

The previous prime is 28438063. The next prime is 28438103. The reversal of 28438067 is 76083482.

It is not a de Polignac number, because 28438067 - 2² = 28438063 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 28438067.

It is not an unprimeable number, because it can be changed into a prime (28438061) 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, 4034 + ... + 8552.

It is an arithmetic number, because the mean of its divisors is an integer number (2169600).

Almost surely, 2^28438067 is an apocalyptic number.

28438067 is a deficient number, since it is larger than the sum of its proper divisors (6275533).

28438067 is a wasteful number, since it uses less digits than its factorization.

28438067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28438067 is about 5332.7354144004. The cubic root of 28438067 is about 305.2343160440.

The spelling of 28438067 in words is "twenty-eight million, four hundred thirty-eight thousand, sixty-seven".