28513036 has 6 divisors (see below), whose sum is σ = 49897820. Its totient is φ = 14256516.

The previous prime is 28513033. The next prime is 28513057. The reversal of 28513036 is 63031582.

It is a junction number, because it is equal to n+sod(n) for n = 28512995 and 28513013.

It is not an unprimeable number, because it can be changed into a prime (28513033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564126 + ... + 3564133.

Almost surely, 2^28513036 is an apocalyptic number.

It is an amenable number.

28513036 is a deficient number, since it is larger than the sum of its proper divisors (21384784).

28513036 is a wasteful number, since it uses less digits than its factorization.

28513036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128263 (or 7128261 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 28513036 is about 5339.7599196968. The cubic root of 28513036 is about 305.5023022909.

The spelling of 28513036 in words is "twenty-eight million, five hundred thirteen thousand, thirty-six".