1002432440 has 32 divisors (see below), whose sum is σ = 2269853280. Its totient is φ = 398416512.

The previous prime is 1002432439. The next prime is 1002432443. The reversal of 1002432440 is 442342001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002432443) 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, 73532 + ... + 86091.

It is an arithmetic number, because the mean of its divisors is an integer number (70932915).

Almost surely, 2^1002432440 is an apocalyptic number.

1002432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002432440 is an abundant number, since it is smaller than the sum of its proper divisors (1267420840).

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

1002432440 is a wasteful number, since it uses less digits than its factorization.

1002432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159791 (or 159787 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1002432440 is about 31661.2134953795. The cubic root of 1002432440 is about 1000.8101568020.

Adding to 1002432440 its reverse (442342001), we get a palindrome (1444774441).

The spelling of 1002432440 in words is "one billion, two million, four hundred thirty-two thousand, four hundred forty".