28447360 has 32 divisors (see below), whose sum is σ = 68008500. Its totient is φ = 11378688.

The previous prime is 28447333. The next prime is 28447369. The reversal of 28447360 is 6374482.

It can be written as a sum of positive squares in 2 ways, for example, as 27962944 + 484416 = 5288^2 + 696^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (28447369) 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, 21585 + ... + 22864.

Almost surely, 2^28447360 is an apocalyptic number.

28447360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28447360 is an abundant number, since it is smaller than the sum of its proper divisors (39561140).

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

28447360 is an equidigital number, since it uses as much as digits as its factorization.

28447360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44468 (or 44456 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 28447360 is about 5333.6066596629. The cubic root of 28447360 is about 305.2675606099.

The spelling of 28447360 in words is "twenty-eight million, four hundred forty-seven thousand, three hundred sixty".