Search a number
-
+
30509101 = 717449571
BaseRepresentation
bin111010001100…
…0100000101101
32010102000121201
41310120200231
530302242401
63005525501
7520215550
oct164304055
963360551
1030509101
1116248a37
12a273891
13642292c
1440a2697
152a29b01
hex1d1882d

30509101 has 16 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 24514560.

The previous prime is 30509099. The next prime is 30509107. The reversal of 30509101 is 10190503.

It is not a de Polignac number, because 30509101 - 21 = 30509099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30509107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53146 + ... + 53716.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 230509101 is an apocalyptic number.

It is an amenable number.

30509101 is a deficient number, since it is larger than the sum of its proper divisors (6556499).

30509101 is a wasteful number, since it uses less digits than its factorization.

30509101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 30509101 is about 5523.5044129610. The cubic root of 30509101 is about 312.4710620671.

Adding to 30509101 its reverse (10190503), we get a palindrome (40699604).

The spelling of 30509101 in words is "thirty million, five hundred nine thousand, one hundred one".

Divisors: 1 7 17 119 449 571 3143 3997 7633 9707 53431 67949 256379 1794653 4358443 30509101