Search a number
-
+
117890587 = 671759561
BaseRepresentation
bin1110000011011…
…01111000011011
322012211110111001
413001231320123
5220134444322
615410445431
72631024223
oct701557033
9265743431
10117890587
1160600a41
1233593877
131b568a59
141192b083
15a53a827
hex706de1b

117890587 has 4 divisors (see below), whose sum is σ = 119650216. Its totient is φ = 116130960.

The previous prime is 117890561. The next prime is 117890593. The reversal of 117890587 is 785098711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785098711 = 2413257671.

It is a cyclic number.

It is not a de Polignac number, because 117890587 - 219 = 117366299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117890537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879714 + ... + 879847.

It is an arithmetic number, because the mean of its divisors is an integer number (29912554).

Almost surely, 2117890587 is an apocalyptic number.

117890587 is a deficient number, since it is larger than the sum of its proper divisors (1759629).

117890587 is an equidigital number, since it uses as much as digits as its factorization.

117890587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759628.

The product of its (nonzero) digits is 141120, while the sum is 46.

The square root of 117890587 is about 10857.7431817114. The cubic root of 117890587 is about 490.3351684377.

The spelling of 117890587 in words is "one hundred seventeen million, eight hundred ninety thousand, five hundred eighty-seven".

Divisors: 1 67 1759561 117890587