28457548 has 12 divisors (see below), whose sum is σ = 56915152. Its totient is φ = 12196080.

The previous prime is 28457543. The next prime is 28457557. The reversal of 28457548 is 84575482.

It is a happy number.

28457548 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28457543) 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, 508143 + ... + 508198.

Almost surely, 2^28457548 is an apocalyptic number.

28457548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28457548 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28457548 is a wasteful number, since it uses less digits than its factorization.

28457548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016352 (or 1016350 counting only the distinct ones).

The product of its digits is 358400, while the sum is 43.

The square root of 28457548 is about 5334.5616502202. The cubic root of 28457548 is about 305.3039986098.

The spelling of 28457548 in words is "twenty-eight million, four hundred fifty-seven thousand, five hundred forty-eight".