30432140240 has 40 divisors (see below), whose sum is σ = 71549739720. Its totient is φ = 12036079616.

The previous prime is 30432140197. The next prime is 30432140293. The reversal of 30432140240 is 4204123403.

It can be written as a sum of positive squares in 4 ways, for example, as 4062277696 + 26369862544 = 63736^2 + 162388^2 .

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

It is a super-2 number, since 2×30432140240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129969 + ... + 2144208.

It is an arithmetic number, because the mean of its divisors is an integer number (1788743493).

Almost surely, 2^30432140240 is an apocalyptic number.

It is an amenable number.

30432140240 is an abundant number, since it is smaller than the sum of its proper divisors (41117599480).

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

30432140240 is a wasteful number, since it uses less digits than its factorization.

30432140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274279 (or 4274273 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 30432140240 its reverse (4204123403), we get a palindrome (34636263643).

The spelling of 30432140240 in words is "thirty billion, four hundred thirty-two million, one hundred forty thousand, two hundred forty".