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30809107 = 729151769
BaseRepresentation
bin111010110000…
…1110000010011
32010222021011001
41311201300103
530341342412
63020202431
7522605320
oct165416023
963867131
1030809107
111643337a
12a399417
1364c9354
14413db47
152a88957
hex1d61c13

30809107 has 8 divisors (see below), whose sum is σ = 36424800. Its totient is φ = 25497024.

The previous prime is 30809099. The next prime is 30809137. The reversal of 30809107 is 70190803.

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

It is not a de Polignac number, because 30809107 - 23 = 30809099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30809137) 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, 75682 + ... + 76087.

It is an arithmetic number, because the mean of its divisors is an integer number (4553100).

Almost surely, 230809107 is an apocalyptic number.

30809107 is a deficient number, since it is larger than the sum of its proper divisors (5615693).

30809107 is a wasteful number, since it uses less digits than its factorization.

30809107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151805.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 30809107 is about 5550.5951933104. The cubic root of 30809107 is about 313.4919333138.

The spelling of 30809107 in words is "thirty million, eight hundred nine thousand, one hundred seven".

Divisors: 1 7 29 203 151769 1062383 4401301 30809107