1220040024 has 64 divisors (see below), whose sum is σ = 3556992000. Its totient is φ = 348580512.

The previous prime is 1220040013. The next prime is 1220040091. The reversal of 1220040024 is 4200400221.

It is a junction number, because it is equal to n+sod(n) for n = 1220039985 and 1220040012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65872 + ... + 82335.

It is an arithmetic number, because the mean of its divisors is an integer number (55578000).

Almost surely, 2^1220040024 is an apocalyptic number.

1220040024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220040024 is an abundant number, since it is smaller than the sum of its proper divisors (2336951976).

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

1220040024 is a wasteful number, since it uses less digits than its factorization.

1220040024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148237 (or 148219 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1220040024 is about 34929.0713303403. The cubic root of 1220040024 is about 1068.5414149484.

Adding to 1220040024 its reverse (4200400221), we get a palindrome (5420440245).

The spelling of 1220040024 in words is "one billion, two hundred twenty million, forty thousand, twenty-four".