1220340024 has 24 divisors (see below), whose sum is σ = 3305087760. Its totient is φ = 406779984.

The previous prime is 1220339987. The next prime is 1220340047. The reversal of 1220340024 is 4200430221.

It is a tau number, because it is divible by the number of its divisors (24).

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 = 1220339979 and 1220340006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8474512 + ... + 8474655.

It is an arithmetic number, because the mean of its divisors is an integer number (137711990).

Almost surely, 2^1220340024 is an apocalyptic number.

It is an amenable number.

1220340024 is an abundant number, since it is smaller than the sum of its proper divisors (2084747736).

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

1220340024 is a wasteful number, since it uses less digits than its factorization.

1220340024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949179 (or 16949172 counting only the distinct ones).

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

The square root of 1220340024 is about 34933.3654834458. The cubic root of 1220340024 is about 1068.6289902593.

Adding to 1220340024 its reverse (4200430221), we get a palindrome (5420770245).

The spelling of 1220340024 in words is "one billion, two hundred twenty million, three hundred forty thousand, twenty-four".