30820781452 has 24 divisors (see below), whose sum is σ = 54513505872. Its totient is φ = 15245736000.

The previous prime is 30820781449. The next prime is 30820781473. The reversal of 30820781452 is 25418702803.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492018 + ... + 551110.

It is an arithmetic number, because the mean of its divisors is an integer number (2271396078).

Almost surely, 2^30820781452 is an apocalyptic number.

It is an amenable number.

30820781452 is a deficient number, since it is larger than the sum of its proper divisors (23692724420).

30820781452 is a wasteful number, since it uses less digits than its factorization.

30820781452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60489 (or 60487 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 30820781452 in words is "thirty billion, eight hundred twenty million, seven hundred eighty-one thousand, four hundred fifty-two".