28360401 has 16 divisors (see below), whose sum is σ = 38413440. Its totient is φ = 18609920.

The previous prime is 28360399. The next prime is 28360433. The reversal of 28360401 is 10406382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28360401 - 2¹ = 28360399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28360481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91036 + ... + 91346.

It is an arithmetic number, because the mean of its divisors is an integer number (2400840).

Almost surely, 2^28360401 is an apocalyptic number.

It is an amenable number.

28360401 is a deficient number, since it is larger than the sum of its proper divisors (10053039).

28360401 is a wasteful number, since it uses less digits than its factorization.

28360401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28360401 is about 5325.4484318224. The cubic root of 28360401 is about 304.9561918626.

Adding to 28360401 its reverse (10406382), we get a palindrome (38766783).

The spelling of 28360401 in words is "twenty-eight million, three hundred sixty thousand, four hundred one".