28357136 has 20 divisors (see below), whose sum is σ = 55478592. Its totient is φ = 14040096.

The previous prime is 28357127. The next prime is 28357141. The reversal of 28357136 is 63175382.

It is a junction number, because it is equal to n+sod(n) for n = 28357096 and 28357105.

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, 6956 + ... + 10251.

Almost surely, 2^28357136 is an apocalyptic number.

It is an amenable number.

28357136 is a deficient number, since it is larger than the sum of its proper divisors (27121456).

28357136 is a wasteful number, since it uses less digits than its factorization.

28357136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17318 (or 17312 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 28357136 is about 5325.1418760442. The cubic root of 28357136 is about 304.9444886880.

The spelling of 28357136 in words is "twenty-eight million, three hundred fifty-seven thousand, one hundred thirty-six".