Search a number
-
+
30681220622 = 2132367765767
BaseRepresentation
bin11100100100101111…
…100100011000001110
32221012020010111101112
4130210233210120032
51000313343024442
622032245012022
72134211033543
oct344457443016
987166114345
1030681220622
1112014827188
125b430b4012
132b7c55a820
1416b0ad4bca
15be883c082
hex724be460e

30681220622 has 32 divisors (see below), whose sum is σ = 52488801792. Its totient is φ = 13342706784.

The previous prime is 30681220607. The next prime is 30681220631. The reversal of 30681220622 is 22602218603.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 342818 + ... + 422949.

It is an arithmetic number, because the mean of its divisors is an integer number (1640275056).

Almost surely, 230681220622 is an apocalyptic number.

30681220622 is a deficient number, since it is larger than the sum of its proper divisors (21807581170).

30681220622 is a wasteful number, since it uses less digits than its factorization.

30681220622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765872.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 30681220622 in words is "thirty billion, six hundred eighty-one million, two hundred twenty thousand, six hundred twenty-two".

Divisors: 1 2 13 23 26 46 67 134 299 598 871 1541 1742 3082 20033 40066 765767 1531534 9954971 17612641 19909942 35225282 51306389 102612778 228964333 457928666 666983057 1180046947 1333966114 2360093894 15340610311 30681220622