28529745 has 16 divisors (see below), whose sum is σ = 46422720. Its totient is φ = 14957504.

The previous prime is 28529713. The next prime is 28529747. The reversal of 28529745 is 54792582.

It is a cyclic number.

It is not a de Polignac number, because 28529745 - 2⁵ = 28529713 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28529697 and 28529706.

It is not an unprimeable number, because it can be changed into a prime (28529747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15234 + ... + 17003.

It is an arithmetic number, because the mean of its divisors is an integer number (2901420).

Almost surely, 2^28529745 is an apocalyptic number.

It is an amenable number.

28529745 is a deficient number, since it is larger than the sum of its proper divisors (17892975).

28529745 is a wasteful number, since it uses less digits than its factorization.

28529745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32304.

The product of its digits is 201600, while the sum is 42.

The square root of 28529745 is about 5341.3242739980. The cubic root of 28529745 is about 305.5619667097.

The spelling of 28529745 in words is "twenty-eight million, five hundred twenty-nine thousand, seven hundred forty-five".