28800004 has 24 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 14126304.

The previous prime is 28800001. The next prime is 28800007. The reversal of 28800004 is 40000882.

It is an interprime number because it is at equal distance from previous prime (28800001) and next prime (28800007).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800001) 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, 73842 + ... + 74230.

It is an arithmetic number, because the mean of its divisors is an integer number (2140320).

Almost surely, 2^28800004 is an apocalyptic number.

It is an amenable number.

28800004 is a deficient number, since it is larger than the sum of its proper divisors (22567676).

28800004 is a wasteful number, since it uses less digits than its factorization.

28800004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 28800004 is about 5366.5635186775. The cubic root of 28800004 is about 306.5237871483.

Adding to 28800004 its reverse (40000882), we get a palindrome (68800886).

The spelling of 28800004 in words is "twenty-eight million, eight hundred thousand, four".