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168796381 = 1360721391
BaseRepresentation
bin10100000111110…
…10000011011101
3102202121202002211
422003322003131
5321202441011
624425520421
74116513505
oct1203720335
9382552084
10168796381
1187310246
1248643111
1328c80520
14185bca05
15ec43b21
hexa0fa0dd

168796381 has 8 divisors (see below), whose sum is σ = 182088704. Its totient is φ = 155548080.

The previous prime is 168796363. The next prime is 168796427. The reversal of 168796381 is 183697861.

168796381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 168796381 - 225 = 135241949 is a prime.

It is a super-2 number, since 2×1687963812 = 56984436477394322, 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 (168776381) 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, 2805 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (22761088).

Almost surely, 2168796381 is an apocalyptic number.

It is an amenable number.

168796381 is a deficient number, since it is larger than the sum of its proper divisors (13292323).

168796381 is a wasteful number, since it uses less digits than its factorization.

168796381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22011.

The product of its digits is 435456, while the sum is 49.

The square root of 168796381 is about 12992.1661396397. The cubic root of 168796381 is about 552.6553480295.

The spelling of 168796381 in words is "one hundred sixty-eight million, seven hundred ninety-six thousand, three hundred eighty-one".

Divisors: 1 13 607 7891 21391 278083 12984337 168796381