28132604 has 6 divisors (see below), whose sum is σ = 49232064. Its totient is φ = 14066300.

The previous prime is 28132589. The next prime is 28132607. The reversal of 28132604 is 40623182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3516572 + ... + 3516579.

It is an arithmetic number, because the mean of its divisors is an integer number (8205344).

Almost surely, 2^28132604 is an apocalyptic number.

It is an amenable number.

28132604 is a deficient number, since it is larger than the sum of its proper divisors (21099460).

28132604 is a wasteful number, since it uses less digits than its factorization.

28132604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033155 (or 7033153 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28132604 is about 5304.0177224440. The cubic root of 28132604 is about 304.1375041618.

Adding to 28132604 its reverse (40623182), we get a palindrome (68755786).

The spelling of 28132604 in words is "twenty-eight million, one hundred thirty-two thousand, six hundred four".