28370005 has 8 divisors (see below), whose sum is σ = 34206624. Its totient is φ = 22587600.

The previous prime is 28369997. The next prime is 28370029. The reversal of 28370005 is 50007382.

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

It is not a de Polignac number, because 28370005 - 2³ = 28369997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12391 + ... + 14500.

It is an arithmetic number, because the mean of its divisors is an integer number (4275828).

Almost surely, 2^28370005 is an apocalyptic number.

It is an amenable number.

28370005 is a deficient number, since it is larger than the sum of its proper divisors (5836619).

28370005 is a wasteful number, since it uses less digits than its factorization.

28370005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27107.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 28370005 is about 5326.3500635989. The cubic root of 28370005 is about 304.9906115537.

Adding to 28370005 its reverse (50007382), we get a palindrome (78377387).

The spelling of 28370005 in words is "twenty-eight million, three hundred seventy thousand, five".