28707048 has 48 divisors (see below), whose sum is σ = 80633280. Its totient is φ = 9568368.

The previous prime is 28707047. The next prime is 28707061. The reversal of 28707048 is 84070782.

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 (28707047) 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 in 11 ways as a sum of consecutive naturals, for example, 5440 + ... + 9327.

It is an arithmetic number, because the mean of its divisors is an integer number (1679860).

Almost surely, 2^28707048 is an apocalyptic number.

It is an amenable number.

28707048 is an abundant number, since it is smaller than the sum of its proper divisors (51926232).

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

28707048 is a wasteful number, since it uses less digits than its factorization.

28707048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14788 (or 14772 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28707048 is about 5357.8958556508. The cubic root of 28707048 is about 306.1936490516.

The spelling of 28707048 in words is "twenty-eight million, seven hundred seven thousand, forty-eight".