28636532 has 12 divisors (see below), whose sum is σ = 51336516. Its totient is φ = 13968960.

The previous prime is 28636507. The next prime is 28636561. The reversal of 28636532 is 23563682.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 20830096 = 2794^2 + 4564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28636492 and 28636501.

It is a congruent number.

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, 87143 + ... + 87470.

It is an arithmetic number, because the mean of its divisors is an integer number (4278043).

Almost surely, 2^28636532 is an apocalyptic number.

It is an amenable number.

28636532 is a deficient number, since it is larger than the sum of its proper divisors (22699984).

28636532 is a wasteful number, since it uses less digits than its factorization.

28636532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174658 (or 174656 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 28636532 is about 5351.3112411819. The cubic root of 28636532 is about 305.9427321027.

The spelling of 28636532 in words is "twenty-eight million, six hundred thirty-six thousand, five hundred thirty-two".