28529244 has 18 divisors (see below), whose sum is σ = 72115680. Its totient is φ = 9509736.

The previous prime is 28529239. The next prime is 28529251. The reversal of 28529244 is 44292582.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 792479 = 28529244 / (2 + 8 + 5 + 2 + 9 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 28529199 and 28529208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396204 + ... + 396275.

Almost surely, 2^28529244 is an apocalyptic number.

It is an amenable number.

28529244 is an abundant number, since it is smaller than the sum of its proper divisors (43586436).

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

28529244 is a wasteful number, since it uses less digits than its factorization.

28529244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792489 (or 792484 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28529244 is about 5341.2773753101. The cubic root of 28529244 is about 305.5601780801.

The spelling of 28529244 in words is "twenty-eight million, five hundred twenty-nine thousand, two hundred forty-four".