340736 has 36 divisors (see below), whose sum is σ = 748104. Its totient is φ = 154880.

The previous prime is 340723. The next prime is 340757. The reversal of 340736 is 637043.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a super-2 number, since 2×340736² = 232202043392, which contains 22 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

340736 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30971 + ... + 30981.

2³⁴⁰⁷³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374052).

340736 is an abundant number, since it is smaller than the sum of its proper divisors (407368).

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

340736 is an frugal number, since it uses more digits than its factorization.

340736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 13 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 340736 is about 583.7259631026. The cubic root of 340736 is about 69.8456462866.

Adding to 340736 its reverse (637043), we get a palindrome (977779).

It can be divided in two parts, 3407 and 36, that added together give a palindrome (3443).

The spelling of 340736 in words is "three hundred forty thousand, seven hundred thirty-six".