Search a number
-
+
30669367 = 59351719
BaseRepresentation
bin111010011111…
…1101000110111
32010201011110111
41310333220313
530322404432
63013203451
7521454031
oct164775067
963634414
1030669367
1116348393
12a330587
13647a871
144104c51
152a5c347
hex1d3fa37

30669367 has 4 divisors (see below), whose sum is σ = 30721680. Its totient is φ = 30617056.

The previous prime is 30669361. The next prime is 30669371. The reversal of 30669367 is 76396603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76396603 = 83920441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30669367 is a prime.

It is a super-2 number, since 2×306693672 = 1881220144361378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30669361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25267 + ... + 26452.

It is an arithmetic number, because the mean of its divisors is an integer number (7680420).

Almost surely, 230669367 is an apocalyptic number.

30669367 is a deficient number, since it is larger than the sum of its proper divisors (52313).

30669367 is an equidigital number, since it uses as much as digits as its factorization.

30669367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52312.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 30669367 is about 5537.9930480274. The cubic root of 30669367 is about 313.0172494041.

The spelling of 30669367 in words is "thirty million, six hundred sixty-nine thousand, three hundred sixty-seven".

Divisors: 1 593 51719 30669367