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1230670769 = 7922369857
BaseRepresentation
bin100100101011010…
…1000101110110001
310011202201112220212
41021112220232301
510010022431034
6322041313505
742332346266
oct11126505661
93152645825
101230670769
11581755189
122a4195895
13167c72873
14b963526d
15730982ce
hex495a8bb1

1230670769 has 8 divisors (see below), whose sum is σ = 1251855360. Its totient is φ = 1209626496.

The previous prime is 1230670757. The next prime is 1230670781. The reversal of 1230670769 is 9670760321.

It is an interprime number because it is at equal distance from previous prime (1230670757) and next prime (1230670781).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230670769 is a prime.

It is a super-2 number, since 2×12306707692 = 3029101083342102722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230670789) 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, 17312 + ... + 52545.

It is an arithmetic number, because the mean of its divisors is an integer number (156481920).

Almost surely, 21230670769 is an apocalyptic number.

It is an amenable number.

1230670769 is a deficient number, since it is larger than the sum of its proper divisors (21184591).

1230670769 is an equidigital number, since it uses as much as digits as its factorization.

1230670769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70159.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 1230670769 is about 35080.9174480942. The cubic root of 1230670769 is about 1071.6360011230.

The spelling of 1230670769 in words is "one billion, two hundred thirty million, six hundred seventy thousand, seven hundred sixty-nine".

Divisors: 1 79 223 17617 69857 5518703 15578111 1230670769