1380506 has 8 divisors (see below), whose sum is σ = 2160864. Its totient is φ = 660220.

The previous prime is 1380499. The next prime is 1380517. The reversal of 1380506 is 6050831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

1380506 is a modest number, since divided by 506 gives 138 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14960 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (270108).

2^1380506 is an apocalyptic number.

1380506 is a deficient number, since it is larger than the sum of its proper divisors (780358).

1380506 is a wasteful number, since it uses less digits than its factorization.

1380506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30036.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1380506 is about 1174.9493606109. The cubic root of 1380506 is about 111.3472339327.

The spelling of 1380506 in words is "one million, three hundred eighty thousand, five hundred six".