28054004 has 24 divisors (see below), whose sum is σ = 54867456. Its totient is φ = 12440000.

The previous prime is 28054003. The next prime is 28054057. The reversal of 28054004 is 40045082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28054003) 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, 5972 + ... + 9579.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144).

Almost surely, 2^28054004 is an apocalyptic number.

It is an amenable number.

28054004 is a deficient number, since it is larger than the sum of its proper divisors (26813452).

28054004 is a wasteful number, since it uses less digits than its factorization.

28054004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15607 (or 15605 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 28054004 is about 5296.6030623410. The cubic root of 28054004 is about 303.8539955626.

Adding to 28054004 its reverse (40045082), we get a palindrome (68099086).

The spelling of 28054004 in words is "twenty-eight million, fifty-four thousand, four".