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30894159 = 371145043
BaseRepresentation
bin111010111011…
…0100001001111
32011010120211010
41311312201033
530402103114
63022100303
7523411302
oct165664117
964116733
1030894159
111649126a
12a41a693
136528c8a
144162b39
152aa3c59
hex1d7684f

30894159 has 8 divisors (see below), whose sum is σ = 41772672. Its totient is φ = 20305880.

The previous prime is 30894137. The next prime is 30894179. The reversal of 30894159 is 95149803.

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 30894159 - 212 = 30890063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30894119) 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, 72309 + ... + 72734.

It is an arithmetic number, because the mean of its divisors is an integer number (5221584).

Almost surely, 230894159 is an apocalyptic number.

30894159 is a deficient number, since it is larger than the sum of its proper divisors (10878513).

30894159 is a wasteful number, since it uses less digits than its factorization.

30894159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145117.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 30894159 is about 5558.2514336795. The cubic root of 30894159 is about 313.7801448261.

The spelling of 30894159 in words is "thirty million, eight hundred ninety-four thousand, one hundred fifty-nine".

Divisors: 1 3 71 213 145043 435129 10298053 30894159