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368713861 = 4144920029
BaseRepresentation
bin10101111110100…
…010000010000101
3221200210121022221
4111332202002011
51223342320421
6100330452341
712065005345
oct2576420205
9850717287
10368713861
1117a1471aa
12a35940b1
135b5090a9
1436d7cd25
1522583841
hex15fa2085

368713861 has 8 divisors (see below), whose sum is σ = 378567000. Its totient is φ = 358901760.

The previous prime is 368713847. The next prime is 368713871. The reversal of 368713861 is 168317863.

It can be written as a sum of positive squares in 4 ways, for example, as 649636 + 368064225 = 806^2 + 19185^2 .

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 368713861 - 27 = 368713733 is a prime.

It is a super-2 number, since 2×3687138612 = 271899822587054642, which 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 (368713831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8395 + ... + 28423.

It is an arithmetic number, because the mean of its divisors is an integer number (47320875).

Almost surely, 2368713861 is an apocalyptic number.

It is an amenable number.

368713861 is a deficient number, since it is larger than the sum of its proper divisors (9853139).

368713861 is a wasteful number, since it uses less digits than its factorization.

368713861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519.

The product of its digits is 145152, while the sum is 43.

The square root of 368713861 is about 19201.9233672047. The cubic root of 368713861 is about 717.0726441326.

The spelling of 368713861 in words is "three hundred sixty-eight million, seven hundred thirteen thousand, eight hundred sixty-one".

Divisors: 1 41 449 18409 20029 821189 8993021 368713861