1220526424 has 64 divisors (see below), whose sum is σ = 2629065600. Its totient is φ = 526209024.

The previous prime is 1220526383. The next prime is 1220526431. The reversal of 1220526424 is 4246250221.

It is a junction number, because it is equal to n+sod(n) for n = 1220526392 and 1220526401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239697 + ... + 244735.

It is an arithmetic number, because the mean of its divisors is an integer number (41079150).

Almost surely, 2^1220526424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220526424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314532800).

1220526424 is an abundant number, since it is smaller than the sum of its proper divisors (1408539176).

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

1220526424 is a wasteful number, since it uses less digits than its factorization.

1220526424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5208 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1220526424 is about 34936.0333180514. The cubic root of 1220526424 is about 1068.6833964901.

Adding to 1220526424 its reverse (4246250221), we get a palindrome (5466776645).

The spelling of 1220526424 in words is "one billion, two hundred twenty million, five hundred twenty-six thousand, four hundred twenty-four".