28730604 has 48 divisors (see below), whose sum is σ = 77025536. Its totient is φ = 8164800.

The previous prime is 28730599. The next prime is 28730621. The reversal of 28730604 is 40603782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16914 + ... + 18534.

Almost surely, 2^28730604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28730604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38512768).

28730604 is an abundant number, since it is smaller than the sum of its proper divisors (48294932).

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

28730604 is a wasteful number, since it uses less digits than its factorization.

28730604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28730604 is about 5360.0936558982. The cubic root of 28730604 is about 306.2773767557.

The spelling of 28730604 in words is "twenty-eight million, seven hundred thirty thousand, six hundred four".