340432 has 10 divisors (see below), whose sum is σ = 659618. Its totient is φ = 170208.

The previous prime is 340429. The next prime is 340447. The reversal of 340432 is 234043.

340432 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in only one way, i.e., 207936 + 132496 = 456^2 + 364^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 21277 = 340432 / (3 + 4 + 0 + 4 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10623 + ... + 10654.

2³⁴⁰⁴³² is an apocalyptic number.

It is an amenable number.

340432 is a deficient number, since it is larger than the sum of its proper divisors (319186).

340432 is a wasteful number, since it uses less digits than its factorization.

340432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21285 (or 21279 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 340432 is about 583.4655088349. The cubic root of 340432 is about 69.8248683293.

Adding to 340432 its reverse (234043), we get a palindrome (574475).

It can be divided in two parts, 34043 and 2, that multiplied together give a palindrome (68086).

The spelling of 340432 in words is "three hundred forty thousand, four hundred thirty-two".