30205232154 has 32 divisors (see below), whose sum is σ = 71071136640. Its totient is φ = 9476150976.

The previous prime is 30205232039. The next prime is 30205232177. The reversal of 30205232154 is 45123250203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16450734 + ... + 16452569.

It is an arithmetic number, because the mean of its divisors is an integer number (2220973020).

Almost surely, 2^30205232154 is an apocalyptic number.

30205232154 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30205232154 is an abundant number, since it is smaller than the sum of its proper divisors (40865904486).

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

30205232154 is a wasteful number, since it uses less digits than its factorization.

30205232154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32903331 (or 32903325 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 30205232154 its reverse (45123250203), we get a palindrome (75328482357).

The spelling of 30205232154 in words is "thirty billion, two hundred five million, two hundred thirty-two thousand, one hundred fifty-four".