445447782 has 32 divisors (see below), whose sum is σ = 1066030560. Its totient is φ = 137060640.

The previous prime is 445447777. The next prime is 445447813. The reversal of 445447782 is 287744544.

It is a congruent number.

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, 316569 + ... + 317972.

It is an arithmetic number, because the mean of its divisors is an integer number (33313455).

Almost surely, 2^445447782 is an apocalyptic number.

445447782 is an abundant number, since it is smaller than the sum of its proper divisors (620582778).

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

445447782 is a wasteful number, since it uses less digits than its factorization.

445447782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634565 (or 634559 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 45.

The square root of 445447782 is about 21105.6338923994. The cubic root of 445447782 is about 763.7166641670.

It can be divided in two parts, 44544 and 7782, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 445447782 in words is "four hundred forty-five million, four hundred forty-seven thousand, seven hundred eighty-two".