345432 has 32 divisors (see below), whose sum is σ = 889200. Its totient is φ = 111744.

The previous prime is 345431. The next prime is 345451. The reversal of 345432 is 234543.

It is a happy number.

345432 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 345399 and 345408.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345432.

It is not an unprimeable number, because it can be changed into a prime (345431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694 + ... + 1082.

2³⁴⁵⁴³² 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 345432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444600).

345432 is an abundant number, since it is smaller than the sum of its proper divisors (543768).

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

345432 is a wasteful number, since it uses less digits than its factorization.

345432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 431 counting only the distinct ones).

The product of its digits is 1440, while the sum is 21.

The square root of 345432 is about 587.7346339974. The cubic root of 345432 is about 70.1650526940.

Adding to 345432 its reverse (234543), we get a palindrome (579975).

Subtracting from 345432 its reverse (234543), we obtain a square (110889 = 333²).

It can be divided in two parts, 3454 and 32, that added together give a triangular number (3486 = T₈₃).

The spelling of 345432 in words is "three hundred forty-five thousand, four hundred thirty-two".