28219548 has 48 divisors (see below), whose sum is σ = 77686784. Its totient is φ = 7801920.

The previous prime is 28219519. The next prime is 28219559. The reversal of 28219548 is 84591282.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2815 + ... + 8022.

Almost surely, 2^28219548 is an apocalyptic number.

28219548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28219548 is an abundant number, since it is smaller than the sum of its proper divisors (49467236).

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

28219548 is a wasteful number, since it uses less digits than its factorization.

28219548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882 (or 10880 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 28219548 is about 5312.2074507685. The cubic root of 28219548 is about 304.4504949435.

The spelling of 28219548 in words is "twenty-eight million, two hundred nineteen thousand, five hundred forty-eight".