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30680359 = 173158217
BaseRepresentation
bin111010100001…
…0010100100111
32010201201112121
41311002110213
530323232414
63013330411
7521531053
oct165022447
963651477
1030680359
1116355676
12a336a07
136482878
144108c63
152a60724
hex1d42527

30680359 has 8 divisors (see below), whose sum is σ = 33533568. Its totient is φ = 27943680.

The previous prime is 30680357. The next prime is 30680399. The reversal of 30680359 is 95308603.

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 30680359 - 21 = 30680357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30680357) 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, 28582 + ... + 29635.

It is an arithmetic number, because the mean of its divisors is an integer number (4191696).

Almost surely, 230680359 is an apocalyptic number.

30680359 is a deficient number, since it is larger than the sum of its proper divisors (2853209).

30680359 is a wasteful number, since it uses less digits than its factorization.

30680359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58265.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30680359 is about 5538.9853764024. The cubic root of 30680359 is about 313.0546404012.

The spelling of 30680359 in words is "thirty million, six hundred eighty thousand, three hundred fifty-nine".

Divisors: 1 17 31 527 58217 989689 1804727 30680359