1124323220 has 48 divisors (see below), whose sum is σ = 2519149248. Its totient is φ = 420026880.

The previous prime is 1124323201. The next prime is 1124323223. The reversal of 1124323220 is 223234211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1124323192 and 1124323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124323223) 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, 31919 + ... + 57161.

It is an arithmetic number, because the mean of its divisors is an integer number (52482276).

Almost surely, 2^1124323220 is an apocalyptic number.

1124323220 is a gapful number since it is divisible by the number (10) 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 1124323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259574624).

1124323220 is an abundant number, since it is smaller than the sum of its proper divisors (1394826028).

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

1124323220 is a wasteful number, since it uses less digits than its factorization.

1124323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25400 (or 25398 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1124323220 is about 33530.9293041514. The cubic root of 1124323220 is about 1039.8333127825.

Adding to 1124323220 its reverse (223234211), we get a palindrome (1347557431).

The spelling of 1124323220 in words is "one billion, one hundred twenty-four million, three hundred twenty-three thousand, two hundred twenty".