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15129085 = 53197607
BaseRepresentation
bin111001101101…
…100111111101
31001110122012111
4321231213331
512333112320
61300134021
7242411056
oct71554775
931418174
1015129085
1185a3784
125097311
13319932a
14201b72d
1514dca5a
hexe6d9fd

15129085 has 8 divisors (see below), whose sum is σ = 18740736. Its totient is φ = 11712720.

The previous prime is 15129071. The next prime is 15129089. The reversal of 15129085 is 58092151.

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

It is not a de Polignac number, because 15129085 - 29 = 15128573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15129089) 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 7 ways as a sum of consecutive naturals, for example, 48649 + ... + 48958.

It is an arithmetic number, because the mean of its divisors is an integer number (2342592).

Almost surely, 215129085 is an apocalyptic number.

It is an amenable number.

15129085 is a deficient number, since it is larger than the sum of its proper divisors (3611651).

15129085 is an equidigital number, since it uses as much as digits as its factorization.

15129085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97643.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 15129085 is about 3889.6124485609. The cubic root of 15129085 is about 247.3266343646.

The spelling of 15129085 in words is "fifteen million, one hundred twenty-nine thousand, eighty-five".

Divisors: 1 5 31 155 97607 488035 3025817 15129085