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30288671 = 77160943
BaseRepresentation
bin111001110001…
…0101100011111
32002222211020122
41303202230133
530223214141
63001105155
7515310110
oct163425437
962884218
1030288671
1116108366
12a1881bb
1363764ba
144046207
1529d464b
hex1ce2b1f

30288671 has 8 divisors (see below), whose sum is σ = 35103744. Its totient is φ = 25595640.

The previous prime is 30288659. The next prime is 30288689. The reversal of 30288671 is 17688203.

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

It is not a de Polignac number, because 30288671 - 218 = 30026527 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 (30288691) 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, 29975 + ... + 30968.

It is an arithmetic number, because the mean of its divisors is an integer number (4387968).

Almost surely, 230288671 is an apocalyptic number.

30288671 is a deficient number, since it is larger than the sum of its proper divisors (4815073).

30288671 is an equidigital number, since it uses as much as digits as its factorization.

30288671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61021.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 30288671 is about 5503.5144226212. The cubic root of 30288671 is about 311.7167019417.

The spelling of 30288671 in words is "thirty million, two hundred eighty-eight thousand, six hundred seventy-one".

Divisors: 1 7 71 497 60943 426601 4326953 30288671