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30869255 = 5127173281
BaseRepresentation
bin111010111000…
…0011100000111
32011002022122202
41311300130013
530400304010
63021345115
7523245554
oct165603407
964068582
1030869255
111647458a
12a40819b
13651a841
144157a2b
152a9b6a5
hex1d70707

30869255 has 16 divisors (see below), whose sum is σ = 37684224. Its totient is φ = 24272640.

The previous prime is 30869239. The next prime is 30869257. The reversal of 30869255 is 55296803.

It is not a de Polignac number, because 30869255 - 24 = 30869239 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 (30869257) 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, 109715 + ... + 109995.

It is an arithmetic number, because the mean of its divisors is an integer number (2355264).

Almost surely, 230869255 is an apocalyptic number.

30869255 is a deficient number, since it is larger than the sum of its proper divisors (6814969).

30869255 is a wasteful number, since it uses less digits than its factorization.

30869255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 30869255 is about 5556.0107091329. The cubic root of 30869255 is about 313.6958086963.

The spelling of 30869255 in words is "thirty million, eight hundred sixty-nine thousand, two hundred fifty-five".

Divisors: 1 5 127 173 281 635 865 1405 21971 35687 48613 109855 178435 243065 6173851 30869255