1232440 has 32 divisors (see below), whose sum is σ = 3026160. Its totient is φ = 448000.

The previous prime is 1232437. The next prime is 1232453. The reversal of 1232440 is 442321.

1232440 = 270² + 271² + ... + 285².

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961 + ... + 1840.

2^1232440 is an apocalyptic number.

1232440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232440 is an abundant number, since it is smaller than the sum of its proper divisors (1793720).

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

1232440 is a wasteful number, since it uses less digits than its factorization.

1232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

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

The square root of 1232440 is about 1110.1531425889. The cubic root of 1232440 is about 107.2149288632.

Adding to 1232440 its reverse (442321), we get a palindrome (1674761).

The spelling of 1232440 in words is "one million, two hundred thirty-two thousand, four hundred forty".