28072368 has 60 divisors (see below), whose sum is σ = 78923520. Its totient is φ = 9314688.

The previous prime is 28072361. The next prime is 28072379. The reversal of 28072368 is 86327082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28072361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54898 + ... + 55406.

It is an arithmetic number, because the mean of its divisors is an integer number (1315392).

Almost surely, 2^28072368 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 28072368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39461760).

28072368 is an abundant number, since it is smaller than the sum of its proper divisors (50851152).

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

28072368 is a wasteful number, since it uses less digits than its factorization.

28072368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28072368 is about 5298.3363426646. The cubic root of 28072368 is about 303.9202814978.

The spelling of 28072368 in words is "twenty-eight million, seventy-two thousand, three hundred sixty-eight".