28736132 has 24 divisors (see below), whose sum is σ = 54647040. Its totient is φ = 13171680.

The previous prime is 28736119. The next prime is 28736143. The reversal of 28736132 is 23163782.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 3743 + ... + 8454.

It is an arithmetic number, because the mean of its divisors is an integer number (2276960).

Almost surely, 2^28736132 is an apocalyptic number.

It is an amenable number.

28736132 is a deficient number, since it is larger than the sum of its proper divisors (25910908).

28736132 is a wasteful number, since it uses less digits than its factorization.

28736132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12251 (or 12249 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 28736132 is about 5360.6092937277. The cubic root of 28736132 is about 306.2970189088.

The spelling of 28736132 in words is "twenty-eight million, seven hundred thirty-six thousand, one hundred thirty-two".