1220330544 has 40 divisors (see below), whose sum is σ = 3158613312. Its totient is φ = 405990720.

The previous prime is 1220330539. The next prime is 1220330557. The reversal of 1220330544 is 4450330221.

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

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, 799 + ... + 49409.

Almost surely, 2^1220330544 is an apocalyptic number.

It is an amenable number.

1220330544 is an abundant number, since it is smaller than the sum of its proper divisors (1938282768).

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

1220330544 is a wasteful number, since it uses less digits than its factorization.

1220330544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49145 (or 49139 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1220330544 is about 34933.2297962842. The cubic root of 1220330544 is about 1068.6262230991.

Adding to 1220330544 its reverse (4450330221), we get a palindrome (5670660765).

The spelling of 1220330544 in words is "one billion, two hundred twenty million, three hundred thirty thousand, five hundred forty-four".