445039428 has 24 divisors (see below), whose sum is σ = 1060520832. Its totient is φ = 145189984.

The previous prime is 445039417. The next prime is 445039433. The reversal of 445039428 is 824930544.

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, 393975 + ... + 395102.

It is an arithmetic number, because the mean of its divisors is an integer number (44188368).

Almost surely, 2^445039428 is an apocalyptic number.

It is an amenable number.

445039428 is an abundant number, since it is smaller than the sum of its proper divisors (615481404).

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

445039428 is a wasteful number, since it uses less digits than its factorization.

445039428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789131 (or 789129 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 445039428 is about 21095.9576222555. The cubic root of 445039428 is about 763.4832195937.

The spelling of 445039428 in words is "four hundred forty-five million, thirty-nine thousand, four hundred twenty-eight".