445223808 has 96 divisors (see below), whose sum is σ = 1348674600. Its totient is φ = 140590080.

The previous prime is 445223803. The next prime is 445223813. The reversal of 445223808 is 808322544.

It is an interprime number because it is at equal distance from previous prime (445223803) and next prime (445223813).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445223803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11718 + ... + 32058.

Almost surely, 2^445223808 is an apocalyptic number.

445223808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445223808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674337300).

445223808 is an abundant number, since it is smaller than the sum of its proper divisors (903450792).

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

445223808 is a wasteful number, since it uses less digits than its factorization.

445223808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20380 (or 20365 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 445223808 is about 21100.3272012545. The cubic root of 445223808 is about 763.5886421632.

The spelling of 445223808 in words is "four hundred forty-five million, two hundred twenty-three thousand, eight hundred eight".