1223576512 has 56 divisors (see below), whose sum is σ = 2499603840. Its totient is φ = 594021120.

The previous prime is 1223576509. The next prime is 1223576561. The reversal of 1223576512 is 2156753221.

It is a super-2 number, since 2×1223576512² = 2994278961436172288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302439 + ... + 306457.

Almost surely, 2^1223576512 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 1223576512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249801920).

1223576512 is an abundant number, since it is smaller than the sum of its proper divisors (1276027328).

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

1223576512 is an equidigital number, since it uses as much as digits as its factorization.

1223576512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4159 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 1223576512 is about 34979.6585460750. The cubic root of 1223576512 is about 1069.5728670444.

The spelling of 1223576512 in words is "one billion, two hundred twenty-three million, five hundred seventy-six thousand, five hundred twelve".