1432240 has 20 divisors (see below), whose sum is σ = 3330144. Its totient is φ = 572864.

The previous prime is 1432217. The next prime is 1432243. The reversal of 1432240 is 422341.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1432240² = 4102622835200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1432243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8872 + ... + 9031.

2^1432240 is an apocalyptic number.

1432240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1432240 is an abundant number, since it is smaller than the sum of its proper divisors (1897904).

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

1432240 is a wasteful number, since it uses less digits than its factorization.

1432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916 (or 17910 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1432240 is about 1196.7622988714. The cubic root of 1432240 is about 112.7211124562.

Adding to 1432240 its reverse (422341), we get a palindrome (1854581).

The spelling of 1432240 in words is "one million, four hundred thirty-two thousand, two hundred forty".