28603116 has 18 divisors (see below), whose sum is σ = 72302412. Its totient is φ = 9534360.

The previous prime is 28603097. The next prime is 28603123. The reversal of 28603116 is 61130682.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 28603116.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 397230 + ... + 397301.

Almost surely, 2^28603116 is an apocalyptic number.

It is an amenable number.

28603116 is an abundant number, since it is smaller than the sum of its proper divisors (43699296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28603116 is a wasteful number, since it uses less digits than its factorization.

28603116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794541 (or 794536 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28603116 is about 5348.1881043957. The cubic root of 28603116 is about 305.8236841505.

Adding to 28603116 its reverse (61130682), we get a palindrome (89733798).

The spelling of 28603116 in words is "twenty-eight million, six hundred three thousand, one hundred sixteen".