1383780 has 24 divisors (see below), whose sum is σ = 3874752. Its totient is φ = 368992.

The previous prime is 1383769. The next prime is 1383797. The reversal of 1383780 is 873831.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 11472 + ... + 11591.

It is an arithmetic number, because the mean of its divisors is an integer number (161448).

2^1383780 is an apocalyptic number.

1383780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383780 is an abundant number, since it is smaller than the sum of its proper divisors (2490972).

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

1383780 is a wasteful number, since it uses less digits than its factorization.

1383780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23075 (or 23073 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1383780 is about 1176.3417870670. The cubic root of 1383780 is about 111.4351879231.

The spelling of 1383780 in words is "one million, three hundred eighty-three thousand, seven hundred eighty".