4445520 has 40 divisors (see below), whose sum is σ = 13781856. Its totient is φ = 1185408.

The previous prime is 4445503. The next prime is 4445521. The reversal of 4445520 is 255444.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9022 + ... + 9501.

Almost surely, 2^4445520 is an apocalyptic number.

4445520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4445520 is an abundant number, since it is smaller than the sum of its proper divisors (9336336).

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

4445520 is a wasteful number, since it uses less digits than its factorization.

4445520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18539 (or 18533 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 4445520 is about 2108.4401817457. The cubic root of 4445520 is about 164.4273999595.

The spelling of 4445520 in words is "four million, four hundred forty-five thousand, five hundred twenty".