28063604 has 12 divisors (see below), whose sum is σ = 49148484. Its totient is φ = 14021184.

The previous prime is 28063601. The next prime is 28063613. The reversal of 28063604 is 40636082.

It can be written as a sum of positive squares in 2 ways, for example, as 9314704 + 18748900 = 3052^2 + 4330^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8474 + ... + 11310.

It is an arithmetic number, because the mean of its divisors is an integer number (4095707).

Almost surely, 2^28063604 is an apocalyptic number.

It is an amenable number.

28063604 is a deficient number, since it is larger than the sum of its proper divisors (21084880).

28063604 is a wasteful number, since it uses less digits than its factorization.

28063604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314 (or 5312 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 28063604 is about 5297.5092260420. The cubic root of 28063604 is about 303.8886509329. Note that the first 3 decimals are identical.

Adding to 28063604 its reverse (40636082), we get a palindrome (68699686).

The spelling of 28063604 in words is "twenty-eight million, sixty-three thousand, six hundred four".