240423444 has 48 divisors (see below), whose sum is σ = 630853440. Its totient is φ = 79172640.

The previous prime is 240423431. The next prime is 240423481. The reversal of 240423444 is 444324042.

It is a happy number.

It is a super-3 number, since 3×240423444³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4447 + ... + 22374.

It is an arithmetic number, because the mean of its divisors is an integer number (13142780).

Almost surely, 2^240423444 is an apocalyptic number.

It is an amenable number.

240423444 is an abundant number, since it is smaller than the sum of its proper divisors (390429996).

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

240423444 is a wasteful number, since it uses less digits than its factorization.

240423444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26917 (or 26909 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 240423444 is about 15505.5939583107. The cubic root of 240423444 is about 621.8117694993.

Adding to 240423444 its reverse (444324042), we get a palindrome (684747486).

The spelling of 240423444 in words is "two hundred forty million, four hundred twenty-three thousand, four hundred forty-four".