28672001 has 4 divisors (see below), whose sum is σ = 29075904. Its totient is φ = 28268100.

The previous prime is 28671989. The next prime is 28672037. The reversal of 28672001 is 10027682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28672001 - 2¹⁴ = 28655617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28672051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201845 + ... + 201986.

It is an arithmetic number, because the mean of its divisors is an integer number (7268976).

It is a Proth number, since it is equal to 875 ⋅ 2¹⁵ + 1 and 875 < 2¹⁵.

Almost surely, 2^28672001 is an apocalyptic number.

It is an amenable number.

28672001 is a deficient number, since it is larger than the sum of its proper divisors (403903).

28672001 is an equidigital number, since it uses as much as digits as its factorization.

28672001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403902.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28672001 is about 5354.6242631953. The cubic root of 28672001 is about 306.0689928019.

Adding to 28672001 its reverse (10027682), we get a palindrome (38699683).

The spelling of 28672001 in words is "twenty-eight million, six hundred seventy-two thousand, one".