28548460 has 48 divisors (see below), whose sum is σ = 62205696. Its totient is φ = 10996992.

The previous prime is 28548439. The next prime is 28548463. The reversal of 28548460 is 6484582.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (28548463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127909 + ... + 128131.

It is an arithmetic number, because the mean of its divisors is an integer number (1295952).

Almost surely, 2^28548460 is an apocalyptic number.

28548460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28548460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31102848).

28548460 is an abundant number, since it is smaller than the sum of its proper divisors (33657236).

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

28548460 is a wasteful number, since it uses less digits than its factorization.

28548460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 28548460 is about 5343.0758931537. The cubic root of 28548460 is about 305.6287664916.

The spelling of 28548460 in words is "twenty-eight million, five hundred forty-eight thousand, four hundred sixty".