28067736 has 32 divisors (see below), whose sum is σ = 70389360. Its totient is φ = 9326592.

The previous prime is 28067723. The next prime is 28067759. The reversal of 28067736 is 63776082.

It is a junction number, because it is equal to n+sod(n) for n = 28067694 and 28067703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6816 + ... + 10128.

Almost surely, 2^28067736 is an apocalyptic number.

It is an amenable number.

28067736 is an abundant number, since it is smaller than the sum of its proper divisors (42321624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28067736 is a wasteful number, since it uses less digits than its factorization.

28067736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 28067736 is about 5297.8992062892. The cubic root of 28067736 is about 303.9035647490.

The spelling of 28067736 in words is "twenty-eight million, sixty-seven thousand, seven hundred thirty-six".