Search a number
-
+
168130456 = 23131616639
BaseRepresentation
bin10100000010101…
…11011110011000
3102201100220121221
422001113132120
5321020133311
624403341424
74111041154
oct1201273630
9381326557
10168130456
11869a599a
1248381874
1328aa93a0
1418488064
15eb61671
hexa057798

168130456 has 16 divisors (see below), whose sum is σ = 339494400. Its totient is φ = 77598624.

The previous prime is 168130451. The next prime is 168130477. The reversal of 168130456 is 654031861.

It is a happy number.

It is a super-3 number, since 3×1681304563 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168130451) 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 3 ways as a sum of consecutive naturals, for example, 808216 + ... + 808423.

It is an arithmetic number, because the mean of its divisors is an integer number (21218400).

Almost surely, 2168130456 is an apocalyptic number.

It is an amenable number.

168130456 is an abundant number, since it is smaller than the sum of its proper divisors (171363944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168130456 is a wasteful number, since it uses less digits than its factorization.

168130456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616658 (or 1616654 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 168130456 is about 12966.5128696963. The cubic root of 168130456 is about 551.9276230107.

The spelling of 168130456 in words is "one hundred sixty-eight million, one hundred thirty thousand, four hundred fifty-six".

Divisors: 1 2 4 8 13 26 52 104 1616639 3233278 6466556 12933112 21016307 42032614 84065228 168130456