28049552 has 20 divisors (see below), whose sum is σ = 55815996. Its totient is φ = 13645440.

The previous prime is 28049551. The next prime is 28049563. The reversal of 28049552 is 25594082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25240576 + 2808976 = 5024^2 + 1676^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28049551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23099 + ... + 24282.

Almost surely, 2^28049552 is an apocalyptic number.

It is an amenable number.

28049552 is a deficient number, since it is larger than the sum of its proper divisors (27766444).

28049552 is a wasteful number, since it uses less digits than its factorization.

28049552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47426 (or 47420 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 28049552 is about 5296.1827763022. The cubic root of 28049552 is about 303.8379214512.

The spelling of 28049552 in words is "twenty-eight million, forty-nine thousand, five hundred fifty-two".