28136552 has 16 divisors (see below), whose sum is σ = 52950660. Its totient is φ = 14016384.

The previous prime is 28136551. The next prime is 28136557. The reversal of 28136552 is 25563182.

It can be written as a sum of positive squares in 2 ways, for example, as 25060036 + 3076516 = 5006^2 + 1754^2 .

It is not an unprimeable number, because it can be changed into a prime (28136551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4133 + ... + 8564.

Almost surely, 2^28136552 is an apocalyptic number.

It is an amenable number.

28136552 is a deficient number, since it is larger than the sum of its proper divisors (24814108).

28136552 is a wasteful number, since it uses less digits than its factorization.

28136552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980 (or 12976 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 28136552 is about 5304.3898800899. The cubic root of 28136552 is about 304.1517305816.

The spelling of 28136552 in words is "twenty-eight million, one hundred thirty-six thousand, five hundred fifty-two".