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30288163 = 374717417
BaseRepresentation
bin111001110001…
…0100100100011
32002222210112211
41303202210203
530223210123
63001102551
7515305453
oct163424443
962883484
1030288163
1116107a44
12a187a57
1363761b9
144045d63
1529d440d
hex1ce2923

30288163 has 8 divisors (see below), whose sum is σ = 31770432. Its totient is φ = 28840896.

The previous prime is 30288149. The next prime is 30288173. The reversal of 30288163 is 36188203.

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

It is a cyclic number.

It is not a de Polignac number, because 30288163 - 25 = 30288131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30288113) 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, 6970 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (3971304).

Almost surely, 230288163 is an apocalyptic number.

30288163 is a deficient number, since it is larger than the sum of its proper divisors (1482269).

30288163 is a wasteful number, since it uses less digits than its factorization.

30288163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 30288163 is about 5503.4682701002. The cubic root of 30288163 is about 311.7149592333.

The spelling of 30288163 in words is "thirty million, two hundred eighty-eight thousand, one hundred sixty-three".

Divisors: 1 37 47 1739 17417 644429 818599 30288163