28628104 has 16 divisors (see below), whose sum is σ = 55529100. Its totient is φ = 13820352.

The previous prime is 28628081. The next prime is 28628107. The reversal of 28628104 is 40182682.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 3648100 = 4998^2 + 1910^2 .

It is not an unprimeable number, because it can be changed into a prime (28628107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61467 + ... + 61930.

Almost surely, 2^28628104 is an apocalyptic number.

It is an amenable number.

28628104 is a deficient number, since it is larger than the sum of its proper divisors (26900996).

28628104 is a wasteful number, since it uses less digits than its factorization.

28628104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123432 (or 123428 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28628104 is about 5350.5237126846. The cubic root of 28628104 is about 305.9127152191.

The spelling of 28628104 in words is "twenty-eight million, six hundred twenty-eight thousand, one hundred four".