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30208227 = 372949603
BaseRepresentation
bin111001100111…
…1000011100011
32002211201220020
41303033003203
530213130402
62555244523
7514523430
oct163170343
962751806
1030208227
1116062985
12a149743
1363489ba
144024b87
1529ba8bc
hex1ccf0e3

30208227 has 16 divisors (see below), whose sum is σ = 47619840. Its totient is φ = 16666272.

The previous prime is 30208181. The next prime is 30208247. The reversal of 30208227 is 72280203.

It is a de Polignac number, because none of the positive numbers 2k-30208227 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 30208197 and 30208206.

It is not an unprimeable number, because it can be changed into a prime (30208247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24193 + ... + 25410.

It is an arithmetic number, because the mean of its divisors is an integer number (2976240).

Almost surely, 230208227 is an apocalyptic number.

30208227 is a deficient number, since it is larger than the sum of its proper divisors (17411613).

30208227 is a wasteful number, since it uses less digits than its factorization.

30208227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49642.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 30208227 is about 5496.2011426075. The cubic root of 30208227 is about 311.4404933793.

The spelling of 30208227 in words is "thirty million, two hundred eight thousand, two hundred twenty-seven".

Divisors: 1 3 7 21 29 87 203 609 49603 148809 347221 1041663 1438487 4315461 10069409 30208227