1220433344 has 112 divisors (see below), whose sum is σ = 2685348960. Its totient is φ = 546877440.

The previous prime is 1220433329. The next prime is 1220433359. The reversal of 1220433344 is 4433340221.

It is an interprime number because it is at equal distance from previous prime (1220433329) and next prime (1220433359).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7054442 + ... + 7054614.

It is an arithmetic number, because the mean of its divisors is an integer number (23976330).

Almost surely, 2^1220433344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220433344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342674480).

1220433344 is an abundant number, since it is smaller than the sum of its proper divisors (1464915616).

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

1220433344 is a wasteful number, since it uses less digits than its factorization.

1220433344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 1220433344 is about 34934.7011437052. The cubic root of 1220433344 is about 1068.6562290926.

Adding to 1220433344 its reverse (4433340221), we get a palindrome (5653773565).

The spelling of 1220433344 in words is "one billion, two hundred twenty million, four hundred thirty-three thousand, three hundred forty-four".