30265242640 has 40 divisors (see below), whose sum is σ = 70463615040. Its totient is φ = 12089421696.

The previous prime is 30265242629. The next prime is 30265242643. The reversal of 30265242640 is 4624256203.

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

It is a junction number, because it is equal to n+sod(n) for n = 30265242596 and 30265242605.

It is not an unprimeable number, because it can be changed into a prime (30265242643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 202030 + ... + 318349.

It is an arithmetic number, because the mean of its divisors is an integer number (1761590376).

Almost surely, 2^30265242640 is an apocalyptic number.

It is an amenable number.

30265242640 is an abundant number, since it is smaller than the sum of its proper divisors (40198372400).

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

30265242640 is a wasteful number, since it uses less digits than its factorization.

30265242640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521119 (or 521113 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 30265242640 its reverse (4624256203), we get a palindrome (34889498843).

The spelling of 30265242640 in words is "thirty billion, two hundred sixty-five million, two hundred forty-two thousand, six hundred forty".