1380215 has 4 divisors (see below), whose sum is σ = 1656264. Its totient is φ = 1104168.

The previous prime is 1380199. The next prime is 1380221. The reversal of 1380215 is 5120831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380215 - 2⁴ = 1380199 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138017 + ... + 138026.

It is an arithmetic number, because the mean of its divisors is an integer number (414066).

2^1380215 is an apocalyptic number.

1380215 is a deficient number, since it is larger than the sum of its proper divisors (276049).

1380215 is an equidigital number, since it uses as much as digits as its factorization.

1380215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276048.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1380215 is about 1174.8255189602. The cubic root of 1380215 is about 111.3394096707.

The spelling of 1380215 in words is "one million, three hundred eighty thousand, two hundred fifteen".