1220304024 has 48 divisors (see below), whose sum is σ = 3359182320. Its totient is φ = 400098240.

The previous prime is 1220303971. The next prime is 1220304037. The reversal of 1220304024 is 4204030221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220303988 and 1220304006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134532 + ... + 143315.

It is an arithmetic number, because the mean of its divisors is an integer number (69982965).

Almost surely, 2^1220304024 is an apocalyptic number.

It is an amenable number.

1220304024 is an abundant number, since it is smaller than the sum of its proper divisors (2138878296).

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

1220304024 is a wasteful number, since it uses less digits than its factorization.

1220304024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277920 (or 277913 counting only the distinct ones).

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

The square root of 1220304024 is about 34932.8502129443. The cubic root of 1220304024 is about 1068.6184819799.

Adding to 1220304024 its reverse (4204030221), we get a palindrome (5424334245).

It can be divided in two parts, 12 and 20304024, that added together give a square (20304036 = 4506²).

The spelling of 1220304024 in words is "one billion, two hundred twenty million, three hundred four thousand, twenty-four".