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30169397 = 194393617
BaseRepresentation
bin111001100010…
…1100100110101
32002202202122002
41303011210311
530210410042
62554345045
7514302266
oct163054465
962682562
1030169397
1116036795
12a12b185
13633411b
14401496d
1529ae132
hex1cc5935

30169397 has 8 divisors (see below), whose sum is σ = 31838400. Its totient is φ = 28508544.

The previous prime is 30169369. The next prime is 30169409. The reversal of 30169397 is 79396103.

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

It is a cyclic number.

It is not a de Polignac number, because 30169397 - 26 = 30169333 is a prime.

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 30169397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30169597) 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 7 ways as a sum of consecutive naturals, for example, 6533 + ... + 10149.

It is an arithmetic number, because the mean of its divisors is an integer number (3979800).

Almost surely, 230169397 is an apocalyptic number.

It is an amenable number.

30169397 is a deficient number, since it is larger than the sum of its proper divisors (1669003).

30169397 is a wasteful number, since it uses less digits than its factorization.

30169397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 30169397 is about 5492.6675668567. The cubic root of 30169397 is about 311.3069931063.

The spelling of 30169397 in words is "thirty million, one hundred sixty-nine thousand, three hundred ninety-seven".

Divisors: 1 19 439 3617 8341 68723 1587863 30169397