1220313624 has 32 divisors (see below), whose sum is σ = 3051751920. Its totient is φ = 406642176.

The previous prime is 1220313623. The next prime is 1220313631. The reversal of 1220313624 is 4263130221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1220313594 and 1220313603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220313623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97212 + ... + 109044.

Almost surely, 2^1220313624 is an apocalyptic number.

It is an amenable number.

1220313624 is an abundant number, since it is smaller than the sum of its proper divisors (1831438296).

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

1220313624 is a wasteful number, since it uses less digits than its factorization.

1220313624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16139 (or 16135 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1220313624 is about 34932.9876191545. The cubic root of 1220313624 is about 1068.6212842079.

Adding to 1220313624 its reverse (4263130221), we get a palindrome (5483443845).

The spelling of 1220313624 in words is "one billion, two hundred twenty million, three hundred thirteen thousand, six hundred twenty-four".