28517036 has 6 divisors (see below), whose sum is σ = 49904820. Its totient is φ = 14258516.

The previous prime is 28516991. The next prime is 28517039. The reversal of 28517036 is 63071582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28516993 and 28517011.

It is not an unprimeable number, because it can be changed into a prime (28517039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564626 + ... + 3564633.

It is an arithmetic number, because the mean of its divisors is an integer number (8317470).

Almost surely, 2^28517036 is an apocalyptic number.

It is an amenable number.

28517036 is a deficient number, since it is larger than the sum of its proper divisors (21387784).

28517036 is a wasteful number, since it uses less digits than its factorization.

28517036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129263 (or 7129261 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28517036 is about 5340.1344552361. The cubic root of 28517036 is about 305.5165875938.

The spelling of 28517036 in words is "twenty-eight million, five hundred seventeen thousand, thirty-six".