28072588 has 24 divisors (see below), whose sum is σ = 50258432. Its totient is φ = 13716864.

The previous prime is 28072573. The next prime is 28072589. The reversal of 28072588 is 88527082.

It is a self number, because there is not a number n which added to its sum of digits gives 28072588.

It is not an unprimeable number, because it can be changed into a prime (28072589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36706 + ... + 37462.

Almost surely, 2^28072588 is an apocalyptic number.

It is an amenable number.

28072588 is a deficient number, since it is larger than the sum of its proper divisors (22185844).

28072588 is a wasteful number, since it uses less digits than its factorization.

28072588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 28072588 is about 5298.3571038578. The cubic root of 28072588 is about 303.9210754255.

The spelling of 28072588 in words is "twenty-eight million, seventy-two thousand, five hundred eighty-eight".