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30142227 = 319528811
BaseRepresentation
bin111001011111…
…0111100010011
32002201101100210
41302332330103
530204022402
62554015203
7514130133
oct162767423
962641323
1030142227
1116018335
12a117503
13632494b
144008ac3
1529a606c
hex1cbef13

30142227 has 8 divisors (see below), whose sum is σ = 42304960. Its totient is φ = 19037160.

The previous prime is 30142201. The next prime is 30142237. The reversal of 30142227 is 72224103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30142227 - 28 = 30141971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30142237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264349 + ... + 264462.

It is an arithmetic number, because the mean of its divisors is an integer number (5288120).

Almost surely, 230142227 is an apocalyptic number.

30142227 is a deficient number, since it is larger than the sum of its proper divisors (12162733).

30142227 is a wasteful number, since it uses less digits than its factorization.

30142227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528833.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 30142227 is about 5490.1937124295. The cubic root of 30142227 is about 311.2135126016.

The spelling of 30142227 in words is "thirty million, one hundred forty-two thousand, two hundred twenty-seven".

Divisors: 1 3 19 57 528811 1586433 10047409 30142227