1373020 has 36 divisors (see below), whose sum is σ = 3185784. Its totient is φ = 492960.

The previous prime is 1372999. The next prime is 1373027. The reversal of 1373020 is 203731.

It is a junction number, because it is equal to n+sod(n) for n = 1372985 and 1373003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17341 + ... + 17419.

It is an arithmetic number, because the mean of its divisors is an integer number (88494).

2^1373020 is an apocalyptic number.

1373020 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 1373020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592892).

1373020 is an abundant number, since it is smaller than the sum of its proper divisors (1812764).

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

1373020 is a wasteful number, since it uses less digits than its factorization.

1373020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 1373020 is about 1171.7593609611. The cubic root of 1373020 is about 111.1456033655.

Adding to 1373020 its reverse (203731), we get a palindrome (1576751).

The spelling of 1373020 in words is "one million, three hundred seventy-three thousand, twenty".