445632420 has 48 divisors (see below), whose sum is σ = 1248746688. Its totient is φ = 118742400.

The previous prime is 445632419. The next prime is 445632433. The reversal of 445632420 is 24236544.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112107 + ... + 116013.

It is an arithmetic number, because the mean of its divisors is an integer number (26015556).

Almost surely, 2^445632420 is an apocalyptic number.

It is an amenable number.

445632420 is an abundant number, since it is smaller than the sum of its proper divisors (803114268).

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

445632420 is a wasteful number, since it uses less digits than its factorization.

445632420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820 (or 5818 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 445632420 is about 21110.0075793449. The cubic root of 445632420 is about 763.8221697164.

Adding to 445632420 its reverse (24236544), we get a palindrome (469868964).

The spelling of 445632420 in words is "four hundred forty-five million, six hundred thirty-two thousand, four hundred twenty".