24223140 has 72 divisors (see below), whose sum is σ = 76684608. Its totient is φ = 6177600.

The previous prime is 24223139. The next prime is 24223153. The reversal of 24223140 is 4132242.

It is a super-2 number, since 2×24223140² = 1173521022919200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 1215 + ... + 7065.

It is an arithmetic number, because the mean of its divisors is an integer number (1065064).

Almost surely, 2^24223140 is an apocalyptic number.

24223140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24223140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38342304).

24223140 is an abundant number, since it is smaller than the sum of its proper divisors (52461468).

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

24223140 is a wasteful number, since it uses less digits than its factorization.

24223140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889 (or 5884 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 24223140 is about 4921.7009254931. The cubic root of 24223140 is about 289.3411121290.

Adding to 24223140 its reverse (4132242), we get a palindrome (28355382).

The spelling of 24223140 in words is "twenty-four million, two hundred twenty-three thousand, one hundred forty".