Search a number
-
+
30940784801 = 209291478369
BaseRepresentation
bin11100110100001101…
…101110100010100001
32221212022112201111122
4130310031232202201
51001331320103201
622114120222025
72143512221453
oct346415564241
987768481448
1030940784801
11121382a2633
125bb600a915
132bc126b5b4
1416d73802d3
15c1150ee1b
hex73436e8a1

30940784801 has 4 divisors (see below), whose sum is σ = 30942284100. Its totient is φ = 30939285504.

The previous prime is 30940784773. The next prime is 30940784813. The reversal of 30940784801 is 10848704903.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6392162401 + 24548622400 = 79951^2 + 156680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30940784801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30940784851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718256 + ... + 760113.

It is an arithmetic number, because the mean of its divisors is an integer number (7735571025).

Almost surely, 230940784801 is an apocalyptic number.

It is an amenable number.

30940784801 is a deficient number, since it is larger than the sum of its proper divisors (1499299).

30940784801 is a wasteful number, since it uses less digits than its factorization.

30940784801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499298.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 30940784801 in words is "thirty billion, nine hundred forty million, seven hundred eighty-four thousand, eight hundred one".

Divisors: 1 20929 1478369 30940784801