445397428 has 24 divisors (see below), whose sum is σ = 921513600. Its totient is φ = 184302048.

The previous prime is 445397423. The next prime is 445397437. The reversal of 445397428 is 824793544.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445397423) 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, 273448 + ... + 275071.

It is an arithmetic number, because the mean of its divisors is an integer number (38396400).

Almost surely, 2^445397428 is an apocalyptic number.

It is an amenable number.

445397428 is an abundant number, since it is smaller than the sum of its proper divisors (476116172).

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

445397428 is a wasteful number, since it uses less digits than its factorization.

445397428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548559 (or 548557 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 445397428 is about 21104.4409544532. The cubic root of 445397428 is about 763.6878859056.

The spelling of 445397428 in words is "four hundred forty-five million, three hundred ninety-seven thousand, four hundred twenty-eight".