30680400082 has 4 divisors (see below), whose sum is σ = 46020600126. Its totient is φ = 15340200040.

The previous prime is 30680400071. The next prime is 30680400083. The reversal of 30680400082 is 28000408603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26834043721 + 3846356361 = 163811^2 + 62019^2 .

It is not an unprimeable number, because it can be changed into a prime (30680400083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670100019 + ... + 7670100022.

Almost surely, 2^30680400082 is an apocalyptic number.

30680400082 is a deficient number, since it is larger than the sum of its proper divisors (15340200044).

30680400082 is a wasteful number, since it uses less digits than its factorization.

30680400082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340200043.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 30680400082 its reverse (28000408603), we get a palindrome (58680808685).

The spelling of 30680400082 in words is "thirty billion, six hundred eighty million, four hundred thousand, eighty-two".