445420548 has 18 divisors (see below), whose sum is σ = 1125924254. Its totient is φ = 148473504.

The previous prime is 445420529. The next prime is 445420571. The reversal of 445420548 is 845024544.

445420548 is a `hidden beast` number, since 44 + 54 + 20 + 548 = 666.

It can be written as a sum of positive squares in only one way, i.e., 344176704 + 101243844 = 18552^2 + 10062^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 12372793 = 445420548 / (4 + 4 + 5 + 4 + 2 + 0 + 5 + 4 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6186361 + ... + 6186432.

Almost surely, 2^445420548 is an apocalyptic number.

It is an amenable number.

445420548 is an abundant number, since it is smaller than the sum of its proper divisors (680503706).

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

445420548 is a wasteful number, since it uses less digits than its factorization.

445420548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12372803 (or 12372798 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

The square root of 445420548 is about 21104.9886993573. The cubic root of 445420548 is about 763.7010996913.

The spelling of 445420548 in words is "four hundred forty-five million, four hundred twenty thousand, five hundred forty-eight".