28360004 has 6 divisors (see below), whose sum is σ = 49630014. Its totient is φ = 14180000.

The previous prime is 28359977. The next prime is 28360039. The reversal of 28360004 is 40006382.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 2553604 = 5080^2 + 1598^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3544997 + ... + 3545004.

It is an arithmetic number, because the mean of its divisors is an integer number (8271669).

Almost surely, 2^28360004 is an apocalyptic number.

It is an amenable number.

28360004 is a deficient number, since it is larger than the sum of its proper divisors (21270010).

28360004 is a wasteful number, since it uses less digits than its factorization.

28360004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090005 (or 7090003 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28360004 is about 5325.4111578356. The cubic root of 28360004 is about 304.9547688906.

Adding to 28360004 its reverse (40006382), we get a palindrome (68366386).

The spelling of 28360004 in words is "twenty-eight million, three hundred sixty thousand, four".