1220074656 has 48 divisors (see below), whose sum is σ = 3238704000. Its totient is φ = 402119168.

The previous prime is 1220074651. The next prime is 1220074663. The reversal of 1220074656 is 6564700221.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1220074651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62856 + ... + 79943.

It is an arithmetic number, because the mean of its divisors is an integer number (67473000).

Almost surely, 2^1220074656 is an apocalyptic number.

1220074656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1220074656 is an abundant number, since it is smaller than the sum of its proper divisors (2018629344).

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

1220074656 is a wasteful number, since it uses less digits than its factorization.

1220074656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142901 (or 142893 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1220074656 is about 34929.5670743283. The cubic root of 1220074656 is about 1068.5515253752.

Adding to 1220074656 its reverse (6564700221), we get a palindrome (7784774877).

The spelling of 1220074656 in words is "one billion, two hundred twenty million, seventy-four thousand, six hundred fifty-six".