28540572 has 24 divisors (see below), whose sum is σ = 66938256. Its totient is φ = 9464448.

The previous prime is 28540571. The next prime is 28540573. The reversal of 28540572 is 27504582.

It is an interprime number because it is at equal distance from previous prime (28540571) and next prime (28540573).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28540571) 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, 3673 + ... + 8400.

It is an arithmetic number, because the mean of its divisors is an integer number (2789094).

Almost surely, 2^28540572 is an apocalyptic number.

It is an amenable number.

28540572 is an abundant number, since it is smaller than the sum of its proper divisors (38397684).

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

28540572 is a wasteful number, since it uses less digits than its factorization.

28540572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12277 (or 12275 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 28540572 is about 5342.3376905621. The cubic root of 28540572 is about 305.6006152734.

The spelling of 28540572 in words is "twenty-eight million, five hundred forty thousand, five hundred seventy-two".