8445540 has 24 divisors (see below), whose sum is σ = 23647680. Its totient is φ = 2252128.

The previous prime is 8445529. The next prime is 8445599. The reversal of 8445540 is 455448.

8445540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 8445498 and 8445507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70320 + ... + 70439.

It is an arithmetic number, because the mean of its divisors is an integer number (985320).

Almost surely, 2^8445540 is an apocalyptic number.

It is an amenable number.

8445540 is an abundant number, since it is smaller than the sum of its proper divisors (15202140).

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

8445540 is a wasteful number, since it uses less digits than its factorization.

8445540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140771 (or 140769 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 8445540 is about 2906.1211261749. The cubic root of 8445540 is about 203.6459641761.

The spelling of 8445540 in words is "eight million, four hundred forty-five thousand, five hundred forty".