28635801 has 8 divisors (see below), whose sum is σ = 38237760. Its totient is φ = 19062192.

The previous prime is 28635797. The next prime is 28635809. The reversal of 28635801 is 10853682.

It is a happy number.

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

It is not a de Polignac number, because 28635801 - 2² = 28635797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28635809) 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, 4605 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (4779720).

Almost surely, 2^28635801 is an apocalyptic number.

It is an amenable number.

28635801 is a deficient number, since it is larger than the sum of its proper divisors (9601959).

28635801 is a wasteful number, since it uses less digits than its factorization.

28635801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14175.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28635801 is about 5351.2429397290. The cubic root of 28635801 is about 305.9401288308.

The spelling of 28635801 in words is "twenty-eight million, six hundred thirty-five thousand, eight hundred one".