28726336 has 28 divisors (see below), whose sum is σ = 58846720. Its totient is φ = 13898880.

The previous prime is 28726331. The next prime is 28726339. The reversal of 28726336 is 63362782.

It is a junction number, because it is equal to n+sod(n) for n = 28726295 and 28726304.

It is not an unprimeable number, because it can be changed into a prime (28726331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256 + ... + 9223.

Almost surely, 2^28726336 is an apocalyptic number.

It is an amenable number.

28726336 is an abundant number, since it is smaller than the sum of its proper divisors (30120384).

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

28726336 is a wasteful number, since it uses less digits than its factorization.

28726336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14522 (or 14512 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 28726336 is about 5359.6955137396. The cubic root of 28726336 is about 306.2622099255.

The spelling of 28726336 in words is "twenty-eight million, seven hundred twenty-six thousand, three hundred thirty-six".