1378274 has 8 divisors (see below), whose sum is σ = 2078400. Its totient is φ = 685476.

The previous prime is 1378271. The next prime is 1378277. The reversal of 1378274 is 4728731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1378271) and next prime (1378277).

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378274.

It is not an unprimeable number, because it can be changed into a prime (1378271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (259800).

2^1378274 is an apocalyptic number.

1378274 is a deficient number, since it is larger than the sum of its proper divisors (700126).

1378274 is a wasteful number, since it uses less digits than its factorization.

1378274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664.

The product of its digits is 9408, while the sum is 32.

The square root of 1378274 is about 1173.9991482109. Note that the first 3 decimals coincide. The cubic root of 1378274 is about 111.2871928836.

It can be divided in two parts, 13 and 78274, that added together give a palindrome (78287).

The spelling of 1378274 in words is "one million, three hundred seventy-eight thousand, two hundred seventy-four".