30800640744 has 72 divisors (see below), whose sum is σ = 86622548610. Its totient is φ = 10266862752.

The previous prime is 30800640743. The next prime is 30800640797. The reversal of 30800640744 is 44704600803.

30800640744 is a `hidden beast` number, since 3 + 0 + 8 + 0 + 0 + 640 + 7 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25462584900 + 5338055844 = 159570^2 + 73062^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30800640699 and 30800640708.

It is not an unprimeable number, because it can be changed into a prime (30800640743) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 240919 + ... + 345894.

Almost surely, 2^30800640744 is an apocalyptic number.

It is an amenable number.

30800640744 is an abundant number, since it is smaller than the sum of its proper divisors (55821907866).

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

30800640744 is an frugal number, since it uses more digits than its factorization.

30800640744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586843 (or 586818 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 30800640744 in words is "thirty billion, eight hundred million, six hundred forty thousand, seven hundred forty-four".