1223245530 has 128 divisors (see below), whose sum is σ = 3608236800. Its totient is φ = 292937472.

The previous prime is 1223245519. The next prime is 1223245577. The reversal of 1223245530 is 355423221.

It is a happy number.

1223245530 is a `hidden beast` number, since 122 + 3 + 2 + 4 + 5 + 530 = 666.

It is a super-4 number, since 4×1223245530⁴ (a number of 37 digits) contains 4444 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1223245494 and 1223245503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125161 + ... + 134579.

It is an arithmetic number, because the mean of its divisors is an integer number (28189350).

Almost surely, 2^1223245530 is an apocalyptic number.

1223245530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223245530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1804118400).

1223245530 is an abundant number, since it is smaller than the sum of its proper divisors (2384991270).

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

1223245530 is a wasteful number, since it uses less digits than its factorization.

1223245530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485 (or 9479 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1223245530 is about 34974.9271621829. The cubic root of 1223245530 is about 1069.4764172002.

Adding to 1223245530 its reverse (355423221), we get a palindrome (1578668751).

It can be divided in two parts, 1223 and 245530, that added together give a triangular number (246753 = T₇₀₂).

The spelling of 1223245530 in words is "one billion, two hundred twenty-three million, two hundred forty-five thousand, five hundred thirty".