28678001 has 8 divisors (see below), whose sum is σ = 31329504. Its totient is φ = 26033920.

The previous prime is 28677989. The next prime is 28678019. The reversal of 28678001 is 10087682.

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

It is not a de Polignac number, because 28678001 - 2⁶ = 28677937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28678021) 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, 9041 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (3916188).

Almost surely, 2^28678001 is an apocalyptic number.

It is an amenable number.

28678001 is a deficient number, since it is larger than the sum of its proper divisors (2651503).

28678001 is a wasteful number, since it uses less digits than its factorization.

28678001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28678001 is about 5355.1844972886. The cubic root of 28678001 is about 306.0903409907.

It can be divided in two parts, 286 and 78001, that added together give a palindrome (78287).

The spelling of 28678001 in words is "twenty-eight million, six hundred seventy-eight thousand, one".