1220724168 has 32 divisors (see below), whose sum is σ = 3231329760. Its totient is φ = 382972160.

The previous prime is 1220724137. The next prime is 1220724209. The reversal of 1220724168 is 8614270221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495578 + ... + 1496393.

It is an arithmetic number, because the mean of its divisors is an integer number (100979055).

Almost surely, 2^1220724168 is an apocalyptic number.

It is an amenable number.

1220724168 is an abundant number, since it is smaller than the sum of its proper divisors (2010605592).

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

1220724168 is a wasteful number, since it uses less digits than its factorization.

1220724168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991997 (or 2991993 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1220724168 is about 34938.8632900385. The cubic root of 1220724168 is about 1068.7411077404.

Adding to 1220724168 its reverse (8614270221), we get a palindrome (9834994389).

The spelling of 1220724168 in words is "one billion, two hundred twenty million, seven hundred twenty-four thousand, one hundred sixty-eight".