424423644 has 24 divisors (see below), whose sum is σ = 990745728. Its totient is φ = 141414000.

The previous prime is 424423621. The next prime is 424423651. The reversal of 424423644 is 446324424.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28519 + ... + 40769.

It is an arithmetic number, because the mean of its divisors is an integer number (41281072).

Almost surely, 2^424423644 is an apocalyptic number.

It is an amenable number.

424423644 is an abundant number, since it is smaller than the sum of its proper divisors (566322084).

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

424423644 is a wasteful number, since it uses less digits than its factorization.

424423644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15145 (or 15143 counting only the distinct ones).

The product of its digits is 73728, while the sum is 33.

The square root of 424423644 is about 20601.5446993666. The cubic root of 424423644 is about 751.5072763503.

The spelling of 424423644 in words is "four hundred twenty-four million, four hundred twenty-three thousand, six hundred forty-four".