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30140009 = 279110799
BaseRepresentation
bin111001011111…
…0011001101001
32002201021022122
41302332121221
530203440014
62554001025
7514120514
oct162763151
962637278
1030140009
11160166a9
12a116175
136323933
144007d7b
1529a558e
hex1cbe669

30140009 has 4 divisors (see below), whose sum is σ = 30153600. Its totient is φ = 30126420.

The previous prime is 30139999. The next prime is 30140041. The reversal of 30140009 is 90004103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30140009 - 212 = 30135913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30140059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (7538400).

Almost surely, 230140009 is an apocalyptic number.

It is an amenable number.

30140009 is a deficient number, since it is larger than the sum of its proper divisors (13591).

30140009 is a wasteful number, since it uses less digits than its factorization.

30140009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13590.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30140009 is about 5489.9917121978. The cubic root of 30140009 is about 311.2058789198.

The spelling of 30140009 in words is "thirty million, one hundred forty thousand, nine".

Divisors: 1 2791 10799 30140009