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30761069 = 38637963
BaseRepresentation
bin111010101011…
…0000001101101
32010212211020212
41311112001231
530333323234
63015152205
7522315263
oct165260155
963784225
1030761069
1116400279
12a375665
1364b0521
14412a433
152a795ce
hex1d5606d

30761069 has 4 divisors (see below), whose sum is σ = 30772896. Its totient is φ = 30749244.

The previous prime is 30761047. The next prime is 30761113. The reversal of 30761069 is 96016703.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30761069 is a prime.

It is a super-2 number, since 2×307610692 = 1892486732045522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30761009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119 + ... + 7844.

It is an arithmetic number, because the mean of its divisors is an integer number (7693224).

Almost surely, 230761069 is an apocalyptic number.

It is an amenable number.

30761069 is a deficient number, since it is larger than the sum of its proper divisors (11827).

30761069 is an equidigital number, since it uses as much as digits as its factorization.

30761069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11826.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 30761069 is about 5546.2662215224. The cubic root of 30761069 is about 313.3289148565.

The spelling of 30761069 in words is "thirty million, seven hundred sixty-one thousand, sixty-nine".

Divisors: 1 3863 7963 30761069