340738 has 4 divisors (see below), whose sum is σ = 511110. Its totient is φ = 170368.

The previous prime is 340723. The next prime is 340757. The reversal of 340738 is 837043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 190969 + 149769 = 437^2 + 387^2 .

It is a super-2 number, since 2×340738² = 232204769288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85183 + ... + 85186.

2³⁴⁰⁷³⁸ is an apocalyptic number.

340738 is a deficient number, since it is larger than the sum of its proper divisors (170372).

340738 is a wasteful number, since it uses less digits than its factorization.

340738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170371.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 340738 is about 583.7276762327. The cubic root of 340738 is about 69.8457829428.

The spelling of 340738 in words is "three hundred forty thousand, seven hundred thirty-eight".