28322548 has 12 divisors (see below), whose sum is σ = 49778820. Its totient is φ = 14100032.

The previous prime is 28322533. The next prime is 28322549. The reversal of 28322548 is 84522382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 15776784 = 3542^2 + 3972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28322549) 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, 14263 + ... + 16126.

It is an arithmetic number, because the mean of its divisors is an integer number (4148235).

Almost surely, 2^28322548 is an apocalyptic number.

It is an amenable number.

28322548 is a deficient number, since it is larger than the sum of its proper divisors (21456272).

28322548 is a wasteful number, since it uses less digits than its factorization.

28322548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30626 (or 30624 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 28322548 is about 5321.8932721354. The cubic root of 28322548 is about 304.8204551089.

The spelling of 28322548 in words is "twenty-eight million, three hundred twenty-two thousand, five hundred forty-eight".