28751548 has 24 divisors (see below), whose sum is σ = 57746304. Its totient is φ = 12270000.

The previous prime is 28751543. The next prime is 28751551. The reversal of 28751548 is 84515782.

It is a self number, because there is not a number n which added to its sum of digits gives 28751548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28751543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4983 + ... + 9073.

It is an arithmetic number, because the mean of its divisors is an integer number (2406096).

Almost surely, 2^28751548 is an apocalyptic number.

28751548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28751548 is an abundant number, since it is smaller than the sum of its proper divisors (28994756).

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

28751548 is a wasteful number, since it uses less digits than its factorization.

28751548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353 (or 4351 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 28751548 is about 5362.0469971831. The cubic root of 28751548 is about 306.3517819126.

The spelling of 28751548 in words is "twenty-eight million, seven hundred fifty-one thousand, five hundred forty-eight".