432240 has 40 divisors (see below), whose sum is σ = 1340688. Its totient is φ = 115200.

The previous prime is 432227. The next prime is 432241. The reversal of 432240 is 42234.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432241) by changing a digit.

432240 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 7 ways as a sum of consecutive naturals, for example, 661 + ... + 1140.

2⁴³²²⁴⁰ is an apocalyptic number.

432240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

432240 is an abundant number, since it is smaller than the sum of its proper divisors (908448).

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

432240 is a wasteful number, since it uses less digits than its factorization.

432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 432240 is about 657.4496178415. The cubic root of 432240 is about 75.6092595248.

Adding to 432240 its reverse (42234), we get a palindrome (474474).

The spelling of 432240 in words is "four hundred thirty-two thousand, two hundred forty".