15432343240 has 16 divisors (see below), whose sum is σ = 34722772380. Its totient is φ = 6172937280.

The previous prime is 15432343187. The next prime is 15432343253. The reversal of 15432343240 is 4234323451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15296247684 + 136095556 = 123678^2 + 11666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192904251 + ... + 192904330.

Almost surely, 2^15432343240 is an apocalyptic number.

15432343240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15432343240 is an abundant number, since it is smaller than the sum of its proper divisors (19290429140).

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

15432343240 is a wasteful number, since it uses less digits than its factorization.

15432343240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385808592 (or 385808588 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 15432343240 its reverse (4234323451), we get a palindrome (19666666691).

The spelling of 15432343240 in words is "fifteen billion, four hundred thirty-two million, three hundred forty-three thousand, two hundred forty".