28130801 has 8 divisors (see below), whose sum is σ = 29846880. Its totient is φ = 26421568.

The previous prime is 28130779. The next prime is 28130803. The reversal of 28130801 is 10803182.

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 28130801 - 2⁶ = 28130737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28130803) 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, 8570 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (3730860).

Almost surely, 2^28130801 is an apocalyptic number.

It is an amenable number.

28130801 is a deficient number, since it is larger than the sum of its proper divisors (1716079).

28130801 is a wasteful number, since it uses less digits than its factorization.

28130801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 28130801 is about 5303.8477542252. The cubic root of 28130801 is about 304.1310066991.

Adding to 28130801 its reverse (10803182), we get a palindrome (38933983).

The spelling of 28130801 in words is "twenty-eight million, one hundred thirty thousand, eight hundred one".