Search a number
-
+
81046356 = 2238298147
BaseRepresentation
bin1001101010010…
…10101101010100
312122111120200220
410311022231110
5131221440411
612013034340
72002611516
oct465125524
9178446626
1081046356
1141826366
12231859b0
1313a38731
14aa99bb6
1571adb06
hex4d4ab54

81046356 has 24 divisors (see below), whose sum is σ = 189359520. Its totient is φ = 26979552.

The previous prime is 81046351. The next prime is 81046363. The reversal of 81046356 is 65364018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81046351) 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, 5875 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (7889980).

Almost surely, 281046356 is an apocalyptic number.

It is an amenable number.

81046356 is an abundant number, since it is smaller than the sum of its proper divisors (108313164).

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

81046356 is a wasteful number, since it uses less digits than its factorization.

81046356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8983 (or 8981 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 81046356 is about 9002.5749649753. The cubic root of 81046356 is about 432.7573947603.

The spelling of 81046356 in words is "eighty-one million, forty-six thousand, three hundred fifty-six".

Divisors: 1 2 3 4 6 12 829 1658 2487 3316 4974 8147 9948 16294 24441 32588 48882 97764 6753863 13507726 20261589 27015452 40523178 81046356