1373233220 has 48 divisors (see below), whose sum is σ = 2954477568. Its totient is φ = 535973760.

The previous prime is 1373233163. The next prime is 1373233247. The reversal of 1373233220 is 223323731.

It is a self number, because there is not a number n which added to its sum of digits gives 1373233220.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 150509 + ... + 159371.

It is an arithmetic number, because the mean of its divisors is an integer number (61551616).

Almost surely, 2^1373233220 is an apocalyptic number.

1373233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373233220 is an abundant number, since it is smaller than the sum of its proper divisors (1581244348).

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

1373233220 is a wasteful number, since it uses less digits than its factorization.

1373233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9060 (or 9058 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 1373233220 is about 37057.1615210879. The cubic root of 1373233220 is about 1111.5135643514.

Adding to 1373233220 its reverse (223323731), we get a palindrome (1596556951).

The spelling of 1373233220 in words is "one billion, three hundred seventy-three million, two hundred thirty-three thousand, two hundred twenty".