1371920 has 40 divisors (see below), whose sum is σ = 3481920. Its totient is φ = 498560.

The previous prime is 1371913. The next prime is 1371943. The reversal of 1371920 is 291731.

It is a tau number, because it is divible by the number of its divisors (40).

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, 101 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2^1371920 is an apocalyptic number.

1371920 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 1371920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740960).

1371920 is an abundant number, since it is smaller than the sum of its proper divisors (2110000).

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

1371920 is a wasteful number, since it uses less digits than its factorization.

1371920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1371920 is about 1171.2898872610. The cubic root of 1371920 is about 111.1159138665.

The spelling of 1371920 in words is "one million, three hundred seventy-one thousand, nine hundred twenty".