28047616 has 27 divisors (see below), whose sum is σ = 56155323. Its totient is φ = 13981440.

The previous prime is 28047601. The next prime is 28047631. The reversal of 28047616 is 61674082.

The square root of 28047616 is 5296.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (28047601) and next prime (28047631).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 84571 + ... + 84901.

Almost surely, 2^28047616 is an apocalyptic number.

28047616 is the 5296-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28047616

28047616 is an abundant number, since it is smaller than the sum of its proper divisors (28107707).

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

28047616 is an frugal number, since it uses more digits than its factorization.

28047616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The cubic root of 28047616 is about 303.8309309207.

The spelling of 28047616 in words is "twenty-eight million, forty-seven thousand, six hundred sixteen".