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15320071 = 137271621
BaseRepresentation
bin111010011100…
…010000000111
31001211100012001
4322130100013
512410220241
61304210131
7244134634
oct72342007
931740161
1015320071
118714218
125169947
133235240
14206b18b
151529431
hexe9c407

15320071 has 8 divisors (see below), whose sum is σ = 16531424. Its totient is φ = 14113440.

The previous prime is 15320069. The next prime is 15320119. The reversal of 15320071 is 17002351.

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 15320071 - 21 = 15320069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15320051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8641 + ... + 10261.

It is an arithmetic number, because the mean of its divisors is an integer number (2066428).

Almost surely, 215320071 is an apocalyptic number.

15320071 is a deficient number, since it is larger than the sum of its proper divisors (1211353).

15320071 is a wasteful number, since it uses less digits than its factorization.

15320071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 15320071 is about 3914.0862279720. The cubic root of 15320071 is about 248.3630165360.

The spelling of 15320071 in words is "fifteen million, three hundred twenty thousand, seventy-one".

Divisors: 1 13 727 1621 9451 21073 1178467 15320071