28395401 has 4 divisors (see below), whose sum is σ = 28408704. Its totient is φ = 28382100.

The previous prime is 28395373. The next prime is 28395413. The reversal of 28395401 is 10459382.

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 28395401 - 2¹⁴ = 28379017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28395421) 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, 2645 + ... + 7986.

It is an arithmetic number, because the mean of its divisors is an integer number (7102176).

Almost surely, 2^28395401 is an apocalyptic number.

It is an amenable number.

28395401 is a deficient number, since it is larger than the sum of its proper divisors (13303).

28395401 is a wasteful number, since it uses less digits than its factorization.

28395401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13302.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28395401 is about 5328.7335268336. The cubic root of 28395401 is about 305.0815906415.

The spelling of 28395401 in words is "twenty-eight million, three hundred ninety-five thousand, four hundred one".