28040552 has 16 divisors (see below), whose sum is σ = 52746660. Its totient is φ = 13974784.

The previous prime is 28040533. The next prime is 28040569. The reversal of 28040552 is 25504082.

It can be written as a sum of positive squares in 2 ways, for example, as 22905796 + 5134756 = 4786^2 + 2266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993 + ... + 8064.

Almost surely, 2^28040552 is an apocalyptic number.

It is an amenable number.

28040552 is a deficient number, since it is larger than the sum of its proper divisors (24706108).

28040552 is a wasteful number, since it uses less digits than its factorization.

28040552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380 (or 11376 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 28040552 is about 5295.3330395736. Note that the first 3 decimals coincide. The cubic root of 28040552 is about 303.8054214216.

The spelling of 28040552 in words is "twenty-eight million, forty thousand, five hundred fifty-two".