Base | Representation |
---|---|
bin | 11100101011000111… |
… | …010010001000001101 |
3 | 2221110200020120012000 |
4 | 130223013102020031 |
5 | 1001023223204441 |
6 | 22051023502513 |
7 | 2136646352205 |
oct | 345307221015 |
9 | 87420216160 |
10 | 30788100621 |
11 | 1206a097763 |
12 | 5b72a57a39 |
13 | 2b9873ca25 |
14 | 16c0d97405 |
15 | c02e002b6 |
hex | 72b1d220d |
30788100621 has 32 divisors (see below), whose sum is σ = 46415600640. Its totient is φ = 20164593600.
The previous prime is 30788100617. The next prime is 30788100661. The reversal of 30788100621 is 12600188703.
It is not a de Polignac number, because 30788100621 - 22 = 30788100617 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30788100661) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1410531 + ... + 1432191.
It is an arithmetic number, because the mean of its divisors is an integer number (1450487520).
Almost surely, 230788100621 is an apocalyptic number.
It is an amenable number.
30788100621 is a deficient number, since it is larger than the sum of its proper divisors (15627500019).
30788100621 is a wasteful number, since it uses less digits than its factorization.
30788100621 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22594 (or 22588 counting only the distinct ones).
The product of its (nonzero) digits is 16128, while the sum is 36.
The spelling of 30788100621 in words is "thirty billion, seven hundred eighty-eight million, one hundred thousand, six hundred twenty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.104 sec. • engine limits •