1378827 has 12 divisors (see below), whose sum is σ = 2078544. Its totient is φ = 879120.

The previous prime is 1378823. The next prime is 1378831. The reversal of 1378827 is 7288731.

It is an interprime number because it is at equal distance from previous prime (1378823) and next prime (1378831).

It is not a de Polignac number, because 1378827 - 2² = 1378823 is a prime.

It is a super-3 number, since 3×1378827³ = 7864128333396285849, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1378791 and 1378800.

It is not an unprimeable number, because it can be changed into a prime (1378823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3124 + ... + 3537.

It is an arithmetic number, because the mean of its divisors is an integer number (173212).

2^1378827 is an apocalyptic number.

1378827 is a deficient number, since it is larger than the sum of its proper divisors (699717).

1378827 is a wasteful number, since it uses less digits than its factorization.

1378827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690 (or 6687 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1378827 is about 1174.2346443535. The cubic root of 1378827 is about 111.3020746823.

The spelling of 1378827 in words is "one million, three hundred seventy-eight thousand, eight hundred twenty-seven".