1378434 has 8 divisors (see below), whose sum is σ = 2756880. Its totient is φ = 459476.

The previous prime is 1378427. The next prime is 1378439. The reversal of 1378434 is 4348731.

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

1378434 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378439) 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, 114864 + ... + 114875.

It is an arithmetic number, because the mean of its divisors is an integer number (344610).

2^1378434 is an apocalyptic number.

1378434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378434 is a wasteful number, since it uses less digits than its factorization.

1378434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229744.

The product of its digits is 8064, while the sum is 30.

The square root of 1378434 is about 1174.0672893834. The cubic root of 1378434 is about 111.2914990573.

The spelling of 1378434 in words is "one million, three hundred seventy-eight thousand, four hundred thirty-four".