1220334544 has 40 divisors (see below), whose sum is σ = 2777759712. Its totient is φ = 512027520.

The previous prime is 1220334497. The next prime is 1220334547. The reversal of 1220334544 is 4454330221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220334547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264394 + ... + 268969.

Almost surely, 2^1220334544 is an apocalyptic number.

It is an amenable number.

1220334544 is an abundant number, since it is smaller than the sum of its proper divisors (1557425168).

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

1220334544 is a wasteful number, since it uses less digits than its factorization.

1220334544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533395 (or 533389 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 1220334544 is about 34933.2870483154. The cubic root of 1220334544 is about 1068.6273906790.

Adding to 1220334544 its reverse (4454330221), we get a palindrome (5674664765).

The spelling of 1220334544 in words is "one billion, two hundred twenty million, three hundred thirty-four thousand, five hundred forty-four".