445423130 has 48 divisors (see below), whose sum is σ = 830521944. Its totient is φ = 171974400.

The previous prime is 445423117. The next prime is 445423201. The reversal of 445423130 is 31324544.

It can be written as a sum of positive squares in 12 ways, for example, as 201157489 + 244265641 = 14183^2 + 15629^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 445423130.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2837012 + ... + 2837168.

Almost surely, 2^445423130 is an apocalyptic number.

445423130 is a deficient number, since it is larger than the sum of its proper divisors (385098814).

445423130 is a wasteful number, since it uses less digits than its factorization.

445423130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 445423130 is about 21105.0498696402. The cubic root of 445423130 is about 763.7025753547.

Adding to 445423130 its reverse (31324544), we get a palindrome (476747674).

The spelling of 445423130 in words is "four hundred forty-five million, four hundred twenty-three thousand, one hundred thirty".