445746378 has 128 divisors (see below), whose sum is σ = 1146617856. Its totient is φ = 112190400.

The previous prime is 445746373. The next prime is 445746391. The reversal of 445746378 is 873647544.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (445746373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3509751 + ... + 3509877.

It is an arithmetic number, because the mean of its divisors is an integer number (8957952).

Almost surely, 2^445746378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445746378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573308928).

445746378 is an abundant number, since it is smaller than the sum of its proper divisors (700871478).

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

445746378 is a wasteful number, since it uses less digits than its factorization.

445746378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 2257920, while the sum is 48.

The square root of 445746378 is about 21112.7065531637. The cubic root of 445746378 is about 763.8872728704.

The spelling of 445746378 in words is "four hundred forty-five million, seven hundred forty-six thousand, three hundred seventy-eight".