423541644 has 48 divisors (see below), whose sum is σ = 1015428960. Its totient is φ = 137320960.

The previous prime is 423541637. The next prime is 423541661. The reversal of 423541644 is 446145324.

It is a happy 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, 190282 + ... + 192494.

It is an arithmetic number, because the mean of its divisors is an integer number (21154770).

Almost surely, 2^423541644 is an apocalyptic number.

It is an amenable number.

423541644 is an abundant number, since it is smaller than the sum of its proper divisors (591887316).

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

423541644 is a wasteful number, since it uses less digits than its factorization.

423541644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650 (or 2648 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 423541644 is about 20580.1274048535. The cubic root of 423541644 is about 750.9863431565.

Adding to 423541644 its reverse (446145324), we get a palindrome (869686968).

The spelling of 423541644 in words is "four hundred twenty-three million, five hundred forty-one thousand, six hundred forty-four".