30205235540 has 12 divisors (see below), whose sum is σ = 63430994676. Its totient is φ = 12082094208.

The previous prime is 30205235531. The next prime is 30205235551. The reversal of 30205235540 is 4553250203.

It can be written as a sum of positive squares in 2 ways, for example, as 13252153924 + 16953081616 = 115118^2 + 130204^2 .

It is a congruent number.

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, 755130869 + ... + 755130908.

It is an arithmetic number, because the mean of its divisors is an integer number (5285916223).

Almost surely, 2^30205235540 is an apocalyptic number.

It is an amenable number.

30205235540 is an abundant number, since it is smaller than the sum of its proper divisors (33225759136).

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

30205235540 is a wasteful number, since it uses less digits than its factorization.

30205235540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510261786 (or 1510261784 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

Adding to 30205235540 its reverse (4553250203), we get a palindrome (34758485743).

The spelling of 30205235540 in words is "thirty billion, two hundred five million, two hundred thirty-five thousand, five hundred forty".