380720 has 20 divisors (see below), whose sum is σ = 885360. Its totient is φ = 152256.

The previous prime is 380713. The next prime is 380729. The reversal of 380720 is 27083.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 380692 and 380701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380729) by changing a digit.

380720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (44268).

2³⁸⁰⁷²⁰ is an apocalyptic number.

It is an amenable number.

380720 is an abundant number, since it is smaller than the sum of its proper divisors (504640).

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

380720 is a wasteful number, since it uses less digits than its factorization.

380720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772 (or 4766 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 380720 is about 617.0251210445. The cubic root of 380720 is about 72.4772818236.

The spelling of 380720 in words is "three hundred eighty thousand, seven hundred twenty".