423020444 has 48 divisors (see below), whose sum is σ = 924618240. Its totient is φ = 164516160.

The previous prime is 423020417. The next prime is 423020449. The reversal of 423020444 is 444020324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423020449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257594 + ... + 259230.

It is an arithmetic number, because the mean of its divisors is an integer number (19262880).

Almost surely, 2^423020444 is an apocalyptic number.

423020444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

423020444 is an abundant number, since it is smaller than the sum of its proper divisors (501597796).

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

423020444 is a wasteful number, since it uses less digits than its factorization.

423020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 423020444 is about 20567.4608058457. The cubic root of 423020444 is about 750.6781682286.

Adding to 423020444 its reverse (444020324), we get a palindrome (867040768).

The spelling of 423020444 in words is "four hundred twenty-three million, twenty thousand, four hundred forty-four".