5645280 has 96 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 1423872.

The previous prime is 5645279. The next prime is 5645291. The reversal of 5645280 is 825465.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8811 + ... + 9429.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

Almost surely, 2^5645280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5645280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9374400).

5645280 is an abundant number, since it is smaller than the sum of its proper divisors (13103520).

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

5645280 is a wasteful number, since it uses less digits than its factorization.

5645280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 5645280 is about 2375.9797978939. The cubic root of 5645280 is about 178.0581386486.

The spelling of 5645280 in words is "five million, six hundred forty-five thousand, two hundred eighty".