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30859073 = 723717021
BaseRepresentation
bin111010110110…
…1111101000001
32011001210200122
41311231331001
530344442243
63021230025
7523204100
oct165557501
964053618
1030859073
1116467973
12a402315
13651600b
144154037
152a98668
hex1d6df41

30859073 has 12 divisors (see below), whose sum is σ = 36869652. Its totient is φ = 25734240.

The previous prime is 30859067. The next prime is 30859111. The reversal of 30859073 is 37095803.

It can be written as a sum of positive squares in 2 ways, for example, as 28976689 + 1882384 = 5383^2 + 1372^2 .

It is not a de Polignac number, because 30859073 - 26 = 30859009 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30859373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6698 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (3072471).

Almost surely, 230859073 is an apocalyptic number.

It is an amenable number.

30859073 is a deficient number, since it is larger than the sum of its proper divisors (6010579).

30859073 is a wasteful number, since it uses less digits than its factorization.

30859073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17072 (or 17065 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30859073 is about 5555.0943286321. The cubic root of 30859073 is about 313.6613148073.

The spelling of 30859073 in words is "thirty million, eight hundred fifty-nine thousand, seventy-three".

Divisors: 1 7 37 49 259 1813 17021 119147 629777 834029 4408439 30859073