445022028 has 162 divisors, whose sum is σ = 1309593012. Its totient is φ = 127306080.

The previous prime is 445021987. The next prime is 445022057. The reversal of 445022028 is 820220544.

It is a happy number.

445022028 is a `hidden beast` number, since 4 + 450 + 2 + 202 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 445021992 and 445022010.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1572375 + ... + 1572657.

Almost surely, 2^445022028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445022028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654796506).

445022028 is an abundant number, since it is smaller than the sum of its proper divisors (864570984).

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

445022028 is a wasteful number, since it uses less digits than its factorization.

445022028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 445022028 is about 21095.5452169409. The cubic root of 445022028 is about 763.4732693284.

The spelling of 445022028 in words is "four hundred forty-five million, twenty-two thousand, twenty-eight".