Search a number
-
+
30354797680 = 245379434971
BaseRepresentation
bin11100010001010010…
…010111010001110000
32220100110220111021221
4130101102113101300
5444131312011210
621540024354424
72123135344264
oct342122272160
986313814257
1030354797680
1111967545859
125a71915a14
132b29a3ac5c
14167d6040a4
15bc9d5e1da
hex711497470

30354797680 has 20 divisors (see below), whose sum is σ = 70574904792. Its totient is φ = 12141919040.

The previous prime is 30354797663. The next prime is 30354797717. The reversal of 30354797680 is 8679745303.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189717406 + ... + 189717565.

Almost surely, 230354797680 is an apocalyptic number.

It is an amenable number.

30354797680 is an abundant number, since it is smaller than the sum of its proper divisors (40220107112).

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

30354797680 is a wasteful number, since it uses less digits than its factorization.

30354797680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379434984 (or 379434978 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 30354797680 in words is "thirty billion, three hundred fifty-four million, seven hundred ninety-seven thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 379434971 758869942 1517739884 1897174855 3035479768 3794349710 6070959536 7588699420 15177398840 30354797680