28773036 has 24 divisors (see below), whose sum is σ = 74597040. Its totient is φ = 9590976.

The previous prime is 28773007. The next prime is 28773037. The reversal of 28773036 is 63037782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28773037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133101 + ... + 133316.

It is an arithmetic number, because the mean of its divisors is an integer number (3108210).

Almost surely, 2^28773036 is an apocalyptic number.

It is an amenable number.

28773036 is an abundant number, since it is smaller than the sum of its proper divisors (45824004).

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

28773036 is a wasteful number, since it uses less digits than its factorization.

28773036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266430 (or 266422 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 28773036 is about 5364.0503353343. The cubic root of 28773036 is about 306.4280821269.

The spelling of 28773036 in words is "twenty-eight million, seven hundred seventy-three thousand, thirty-six".