28502201 has 8 divisors (see below), whose sum is σ = 35079744. Its totient is φ = 22551120.

The previous prime is 28502197. The next prime is 28502231. The reversal of 28502201 is 10220582.

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 28502201 - 2² = 28502197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28502231) 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, 156515 + ... + 156696.

It is an arithmetic number, because the mean of its divisors is an integer number (4384968).

Almost surely, 2^28502201 is an apocalyptic number.

It is an amenable number.

28502201 is a deficient number, since it is larger than the sum of its proper divisors (6577543).

28502201 is a wasteful number, since it uses less digits than its factorization.

28502201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313231.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 28502201 is about 5338.7452645729. The cubic root of 28502201 is about 305.4636002644.

Adding to 28502201 its reverse (10220582), we get a palindrome (38722783).

The spelling of 28502201 in words is "twenty-eight million, five hundred two thousand, two hundred one".