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30868277 = 1117237177
BaseRepresentation
bin111010111000…
…0001100110101
32011002021022112
41311300030311
530400241102
63021340405
7523242656
oct165601465
964067275
1030868277
1116473880
12a407705
13651a26b
14415752d
152a9b252
hex1d70335

30868277 has 16 divisors (see below), whose sum is σ = 37210752. Its totient is φ = 25259520.

The previous prime is 30868259. The next prime is 30868289. The reversal of 30868277 is 77286803.

It is not a de Polignac number, because 30868277 - 28 = 30868021 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 (30868297) 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 15 ways as a sum of consecutive naturals, for example, 713 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (2325672).

Almost surely, 230868277 is an apocalyptic number.

It is an amenable number.

30868277 is a deficient number, since it is larger than the sum of its proper divisors (6342475).

30868277 is a wasteful number, since it uses less digits than its factorization.

30868277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 30868277 is about 5555.9226956465. The cubic root of 30868277 is about 313.6924958236.

The spelling of 30868277 in words is "thirty million, eight hundred sixty-eight thousand, two hundred seventy-seven".

Divisors: 1 11 17 23 187 253 391 4301 7177 78947 122009 165071 1342099 1815781 2806207 30868277