1373220216 has 112 divisors (see below), whose sum is σ = 3955260960. Its totient is φ = 446497920.

The previous prime is 1373220157. The next prime is 1373220241. The reversal of 1373220216 is 6120223731.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1373220216.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 236241 + ... + 241983.

It is an arithmetic number, because the mean of its divisors is an integer number (35314830).

Almost surely, 2^1373220216 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 1373220216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1977630480).

1373220216 is an abundant number, since it is smaller than the sum of its proper divisors (2582040744).

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

1373220216 is an equidigital number, since it uses as much as digits as its factorization.

1373220216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5808 (or 5789 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1373220216 is about 37056.9860620100. The cubic root of 1373220216 is about 1111.5100558024.

Adding to 1373220216 its reverse (6120223731), we get a palindrome (7493443947).

The spelling of 1373220216 in words is "one billion, three hundred seventy-three million, two hundred twenty thousand, two hundred sixteen".