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189260707 = 208190947
BaseRepresentation
bin10110100011111…
…10001110100011
3111012010102212211
423101332032203
5341422320312
630440302551
74455455326
oct1321761643
9435112784
10189260707
1197918409
1253471a57
13302970ac
141b1c87bd
15119373a7
hexb47e3a3

189260707 has 4 divisors (see below), whose sum is σ = 189353736. Its totient is φ = 189167680.

The previous prime is 189260683. The next prime is 189260719. The reversal of 189260707 is 707062981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707062981 = 757934033.

It is a cyclic number.

It is not a de Polignac number, because 189260707 - 211 = 189258659 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189260707.

It is not an unprimeable number, because it can be changed into a prime (189260107) 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, 43393 + ... + 47554.

It is an arithmetic number, because the mean of its divisors is an integer number (47338434).

Almost surely, 2189260707 is an apocalyptic number.

189260707 is a deficient number, since it is larger than the sum of its proper divisors (93029).

189260707 is an equidigital number, since it uses as much as digits as its factorization.

189260707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93028.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 189260707 is about 13757.2056392278. The cubic root of 189260707 is about 574.1431037291.

The spelling of 189260707 in words is "one hundred eighty-nine million, two hundred sixty thousand, seven hundred seven".

Divisors: 1 2081 90947 189260707