1373720 has 32 divisors (see below), whose sum is σ = 3147120. Its totient is φ = 539520.

The previous prime is 1373717. The next prime is 1373761. The reversal of 1373720 is 273731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2159 + ... + 2721.

2^1373720 is an apocalyptic number.

1373720 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 1373720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573560).

1373720 is an abundant number, since it is smaller than the sum of its proper divisors (1773400).

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

1373720 is a wasteful number, since it uses less digits than its factorization.

1373720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 1373720 is about 1172.0580190417. The cubic root of 1373720 is about 111.1644884277.

The spelling of 1373720 in words is "one million, three hundred seventy-three thousand, seven hundred twenty".