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30713269 = 67458407
BaseRepresentation
bin111010100101…
…0010110110101
32010210101200111
41311022112311
530330311034
63014143021
7522026026
oct165122665
963711614
1030713269
1116378374
12a351a71
136494842
144116c4d
152a6a364
hex1d4a5b5

30713269 has 4 divisors (see below), whose sum is σ = 31171744. Its totient is φ = 30254796.

The previous prime is 30713239. The next prime is 30713279. The reversal of 30713269 is 96231703.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96231703 = 124977047.

It is a cyclic number.

It is not a de Polignac number, because 30713269 - 29 = 30712757 is a prime.

It is a super-2 number, since 2×307132692 = 1886609785332722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30713269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30713239) 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, 229137 + ... + 229270.

It is an arithmetic number, because the mean of its divisors is an integer number (7792936).

Almost surely, 230713269 is an apocalyptic number.

It is an amenable number.

30713269 is a deficient number, since it is larger than the sum of its proper divisors (458475).

30713269 is an equidigital number, since it uses as much as digits as its factorization.

30713269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458474.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 30713269 is about 5541.9553408522. The cubic root of 30713269 is about 313.1665355132.

The spelling of 30713269 in words is "thirty million, seven hundred thirteen thousand, two hundred sixty-nine".

Divisors: 1 67 458407 30713269