1220024316 has 48 divisors (see below), whose sum is σ = 3365591040. Its totient is φ = 336557760.

The previous prime is 1220024297. The next prime is 1220024317. The reversal of 1220024316 is 6134200221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1220024292 and 1220024301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220024317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247980 + ... + 252851.

It is an arithmetic number, because the mean of its divisors is an integer number (70116480).

Almost surely, 2^1220024316 is an apocalyptic number.

It is an amenable number.

1220024316 is an abundant number, since it is smaller than the sum of its proper divisors (2145566724).

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

1220024316 is a wasteful number, since it uses less digits than its factorization.

1220024316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500874 (or 500872 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1220024316 is about 34928.8464739390. The cubic root of 1220024316 is about 1068.5368291096.

Adding to 1220024316 its reverse (6134200221), we get a palindrome (7354224537).

The spelling of 1220024316 in words is "one billion, two hundred twenty million, twenty-four thousand, three hundred sixteen".