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15088139 = 117119319
BaseRepresentation
bin111001100011…
…101000001011
31001101120000222
4321203220023
512330310024
61255220255
7242150513
oct71435013
931346028
1015088139
118575a40
12507768b
1331837c1
14200a843
1514d085e
hexe63a0b

15088139 has 8 divisors (see below), whose sum is σ = 16692480. Its totient is φ = 13522600.

The previous prime is 15088133. The next prime is 15088159. The reversal of 15088139 is 93188051.

15088139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15088139 - 216 = 15022603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15088099 and 15088108.

It is not an unprimeable number, because it can be changed into a prime (15088133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8879 + ... + 10440.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 215088139 is an apocalyptic number.

15088139 is a deficient number, since it is larger than the sum of its proper divisors (1604341).

15088139 is a wasteful number, since it uses less digits than its factorization.

15088139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 15088139 is about 3884.3453759932. The cubic root of 15088139 is about 247.1033076573.

The spelling of 15088139 in words is "fifteen million, eighty-eight thousand, one hundred thirty-nine".

Divisors: 1 11 71 781 19319 212509 1371649 15088139