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30807690277 = 731319794603
BaseRepresentation
bin11100101100010010…
…000000110000100101
32221112001002211010211
4130230102000300211
51001043232042102
622053003415421
72140305022000
oct345422006045
987461084124
1030807690277
111207a157761
125b79524571
132b9c80b440
1416c3816537
15c049be7d7
hex72c480c25

30807690277 has 64 divisors (see below), whose sum is σ = 41251840000. Its totient is φ = 22795141824.

The previous prime is 30807690209. The next prime is 30807690281. The reversal of 30807690277 is 77209670803.

It is not a de Polignac number, because 30807690277 - 27 = 30807690149 is a prime.

It is a super-2 number, since 2×308076902772 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 30807690277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30807690077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6690658 + ... + 6695260.

It is an arithmetic number, because the mean of its divisors is an integer number (644560000).

Almost surely, 230807690277 is an apocalyptic number.

It is an amenable number.

30807690277 is a deficient number, since it is larger than the sum of its proper divisors (10444149723).

30807690277 is a wasteful number, since it uses less digits than its factorization.

30807690277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735 (or 4721 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 30807690277 in words is "thirty billion, eight hundred seven million, six hundred ninety thousand, two hundred seventy-seven".

Divisors: 1 7 13 19 49 79 91 133 247 343 553 637 931 1027 1501 1729 3871 4459 4603 6517 7189 10507 12103 19513 27097 32221 50323 59839 73549 84721 87457 136591 225547 352261 363637 418873 514843 612199 956137 1136941 1578829 2545459 2932111 4285393 4727281 6692959 6909103 7958587 17818213 20524777 29997751 33090967 48363721 55710109 89818339 124727491 231636769 338546047 389970763 628728373 1621457383 2369822329 4401098611 30807690277