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115200987 = 3113490939
BaseRepresentation
bin1101101110111…
…01001111011011
322000202211001020
412313131033123
5213442412422
615233053523
72566122636
oct667351733
9260684036
10115200987
115a034230
12326b72a3
131ab36785
141142ac1d
15a1a895c
hex6ddd3db

115200987 has 8 divisors (see below), whose sum is σ = 167565120. Its totient is φ = 69818760.

The previous prime is 115200973. The next prime is 115201013. The reversal of 115200987 is 789002511.

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

It is not a de Polignac number, because 115200987 - 215 = 115168219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3490939 = 115200987 / (1 + 1 + 5 + 2 + 0 + 0 + 9 + 8 + 7).

It is not an unprimeable number, because it can be changed into a prime (115200907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745437 + ... + 1745502.

It is an arithmetic number, because the mean of its divisors is an integer number (20945640).

Almost surely, 2115200987 is an apocalyptic number.

115200987 is a deficient number, since it is larger than the sum of its proper divisors (52364133).

115200987 is a wasteful number, since it uses less digits than its factorization.

115200987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490953.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 115200987 is about 10733.1722710483. The cubic root of 115200987 is about 486.5775492561.

It can be divided in two parts, 115 and 200987, that added together give a palindrome (201102).

The spelling of 115200987 in words is "one hundred fifteen million, two hundred thousand, nine hundred eighty-seven".

Divisors: 1 3 11 33 3490939 10472817 38400329 115200987