28944360 has 192 divisors, whose sum is σ = 100835280. Its totient is φ = 7188480.

The previous prime is 28944299. The next prime is 28944361. The reversal of 28944360 is 6344982.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14152644 + 14791716 = 3762^2 + 3846^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28944361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 546094 + ... + 546146.

Almost surely, 2^28944360 is an apocalyptic number.

28944360 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 28944360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50417640).

28944360 is an abundant number, since it is smaller than the sum of its proper divisors (71890920).

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

28944360 is a wasteful number, since it uses less digits than its factorization.

28944360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28944360 is about 5379.9962825266. The cubic root of 28944360 is about 307.0350697522.

The spelling of 28944360 in words is "twenty-eight million, nine hundred forty-four thousand, three hundred sixty".