1378715 has 8 divisors (see below), whose sum is σ = 1781808. Its totient is φ = 1018080.

The previous prime is 1378703. The next prime is 1378721. The reversal of 1378715 is 5178731.

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

It is not a de Polignac number, because 1378715 - 2¹² = 1374619 is a prime.

It is a Duffinian number.

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, 10541 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (222726).

2^1378715 is an apocalyptic number.

1378715 is a deficient number, since it is larger than the sum of its proper divisors (403093).

1378715 is a wasteful number, since it uses less digits than its factorization.

1378715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21229.

The product of its digits is 5880, while the sum is 32.

The square root of 1378715 is about 1174.1869527465. The cubic root of 1378715 is about 111.2990609685.

The spelling of 1378715 in words is "one million, three hundred seventy-eight thousand, seven hundred fifteen".