23421144 has 32 divisors (see below), whose sum is σ = 58921920. Its totient is φ = 7757856.

The previous prime is 23421143. The next prime is 23421149. The reversal of 23421144 is 44112432.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23421144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 919 + ... + 6905.

It is an arithmetic number, because the mean of its divisors is an integer number (1841310).

Almost surely, 2^23421144 is an apocalyptic number.

23421144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23421144 is an abundant number, since it is smaller than the sum of its proper divisors (35500776).

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

23421144 is a wasteful number, since it uses less digits than its factorization.

23421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159 (or 6155 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 23421144 is about 4839.5396475285. The cubic root of 23421144 is about 286.1119746716. Note that the first 3 decimals are identical.

Adding to 23421144 its reverse (44112432), we get a palindrome (67533576).

It can be divided in two parts, 2342 and 1144, that added together give a triangular number (3486 = T₈₃).

The spelling of 23421144 in words is "twenty-three million, four hundred twenty-one thousand, one hundred forty-four".