Search a number
-
+
359690981 = 13217125197
BaseRepresentation
bin10101011100000…
…111001011100101
3221001211012021012
4111130013023211
51214040102411
655405232005
711625215516
oct2534071345
9831735235
10359690981
11175044181
12a0562605
135969a200
1435ab0a0d
15218a018b
hex157072e5

359690981 has 12 divisors (see below), whose sum is σ = 412402212. Its totient is φ = 312489216.

The previous prime is 359690977. The next prime is 359690993. The reversal of 359690981 is 189096953.

It can be written as a sum of positive squares in 6 ways, for example, as 55502500 + 304188481 = 7450^2 + 17441^2 .

It is not a de Polignac number, because 359690981 - 22 = 359690977 is a prime.

It is a super-2 number, since 2×3596909812 = 258755203625484722, 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 (359690911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59726 + ... + 65471.

It is an arithmetic number, because the mean of its divisors is an integer number (34366851).

Almost surely, 2359690981 is an apocalyptic number.

It is an amenable number.

359690981 is a deficient number, since it is larger than the sum of its proper divisors (52711231).

359690981 is a wasteful number, since it uses less digits than its factorization.

359690981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125240 (or 125227 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 359690981 is about 18965.5208470529. The cubic root of 359690981 is about 711.1750567758.

The spelling of 359690981 in words is "three hundred fifty-nine million, six hundred ninety thousand, nine hundred eighty-one".

Divisors: 1 13 17 169 221 2873 125197 1627561 2128349 21158293 27668537 359690981