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380235120781 = 29103112717319
BaseRepresentation
bin1011000100001111100…
…01111000000010001101
31100100110020110110211011
411202013301320002031
522212210142331111
6450402210125221
736320403125305
oct5420761700215
91310406413734
10380235120781
111372908a407a
1261837b80811
1329b18896739
1414591202605
159d56623021
hex5887c7808d

380235120781 has 8 divisors (see below), whose sum is σ = 393728227200. Its totient is φ = 366767451120.

The previous prime is 380235120773. The next prime is 380235120809. The reversal of 380235120781 is 187021532083.

It is a happy number.

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 380235120781 - 23 = 380235120773 is a prime.

It is a super-2 number, since 2×3802351207812 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380235120731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6328761 + ... + 6388558.

It is an arithmetic number, because the mean of its divisors is an integer number (49216028400).

Almost surely, 2380235120781 is an apocalyptic number.

It is an amenable number.

380235120781 is a deficient number, since it is larger than the sum of its proper divisors (13493106419).

380235120781 is a wasteful number, since it uses less digits than its factorization.

380235120781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12718379.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 380235120781 in words is "three hundred eighty billion, two hundred thirty-five million, one hundred twenty thousand, seven hundred eighty-one".

Divisors: 1 29 1031 29899 12717319 368802251 13111555889 380235120781