1380734 has 4 divisors (see below), whose sum is σ = 2071104. Its totient is φ = 690366.

The previous prime is 1380727. The next prime is 1380763. The reversal of 1380734 is 4370831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4370831 = 71 ⋅61561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345182 + ... + 345185.

It is an arithmetic number, because the mean of its divisors is an integer number (517776).

2^1380734 is an apocalyptic number.

1380734 is a deficient number, since it is larger than the sum of its proper divisors (690370).

1380734 is an equidigital number, since it uses as much as digits as its factorization.

1380734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690369.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1380734 is about 1175.0463820633. The cubic root of 1380734 is about 111.3533635142.

The spelling of 1380734 in words is "one million, three hundred eighty thousand, seven hundred thirty-four".