28865001 has 8 divisors (see below), whose sum is σ = 41985504. Its totient is φ = 17493920.

The previous prime is 28864991. The next prime is 28865021. The reversal of 28865001 is 10056882.

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 28865001 - 2¹³ = 28856809 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28865001.

It is not an unprimeable number, because it can be changed into a prime (28865021) 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, 437316 + ... + 437381.

It is an arithmetic number, because the mean of its divisors is an integer number (5248188).

Almost surely, 2^28865001 is an apocalyptic number.

It is an amenable number.

28865001 is a deficient number, since it is larger than the sum of its proper divisors (13120503).

28865001 is a wasteful number, since it uses less digits than its factorization.

28865001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874711.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28865001 is about 5372.6158433300. The cubic root of 28865001 is about 306.7542056069.

It can be divided in two parts, 2886 and 5001, that added together give a palindrome (7887).

The spelling of 28865001 in words is "twenty-eight million, eight hundred sixty-five thousand, one".