445632988 has 12 divisors (see below), whose sum is σ = 780350760. Its totient is φ = 222675632.

The previous prime is 445632983. The next prime is 445632989. The reversal of 445632988 is 889236544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445632983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27931 + ... + 40882.

It is an arithmetic number, because the mean of its divisors is an integer number (65029230).

Almost surely, 2^445632988 is an apocalyptic number.

It is an amenable number.

445632988 is a deficient number, since it is larger than the sum of its proper divisors (334717772).

445632988 is a wasteful number, since it uses less digits than its factorization.

445632988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70436 (or 70434 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 445632988 is about 21110.0210326755. The cubic root of 445632988 is about 763.8224942371.

The spelling of 445632988 in words is "four hundred forty-five million, six hundred thirty-two thousand, nine hundred eighty-eight".