30144424240 has 80 divisors (see below), whose sum is σ = 80120282688. Its totient is φ = 10332361728.

The previous prime is 30144424223. The next prime is 30144424283. The reversal of 30144424240 is 4242444103.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×30144424240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 30144424199 and 30144424208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3385234 + ... + 3394126.

Almost surely, 2^30144424240 is an apocalyptic number.

It is an amenable number.

30144424240 is an abundant number, since it is smaller than the sum of its proper divisors (49975858448).

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

30144424240 is a wasteful number, since it uses less digits than its factorization.

30144424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966 (or 14960 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 30144424240 its reverse (4242444103), we get a palindrome (34386868343).

The spelling of 30144424240 in words is "thirty billion, one hundred forty-four million, four hundred twenty-four thousand, two hundred forty".