1373320 has 64 divisors (see below), whose sum is σ = 3528000. Its totient is φ = 476928.

The previous prime is 1373233. The next prime is 1373321. The reversal of 1373320 is 233731.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1373321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9811 + ... + 9949.

It is an arithmetic number, because the mean of its divisors is an integer number (55125).

2^1373320 is an apocalyptic number.

1373320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1764000).

1373320 is an abundant number, since it is smaller than the sum of its proper divisors (2154680).

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

1373320 is a wasteful number, since it uses less digits than its factorization.

1373320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 1373320 is about 1171.8873666014. The cubic root of 1373320 is about 111.1536977494.

It can be divided in two parts, 1 and 373320, that added together give a square (373321 = 611²).

The spelling of 1373320 in words is "one million, three hundred seventy-three thousand, three hundred twenty".