Search a number
-
+
80974361 = 136228797
BaseRepresentation
bin1001101001110…
…01001000011001
312122100220221102
410310321020121
5131212134421
612011321145
72002161566
oct464711031
9178326842
1080974361
1141787266
12231501b5
1313a11a30
14aa7b86d
15719760b
hex4d39219

80974361 has 4 divisors (see below), whose sum is σ = 87203172. Its totient is φ = 74745552.

The previous prime is 80974343. The next prime is 80974363. The reversal of 80974361 is 16347908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51337225 + 29637136 = 7165^2 + 5444^2 .

It is a cyclic number.

It is not a de Polignac number, because 80974361 - 26 = 80974297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80974363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3114386 + ... + 3114411.

It is an arithmetic number, because the mean of its divisors is an integer number (21800793).

Almost surely, 280974361 is an apocalyptic number.

It is an amenable number.

80974361 is a deficient number, since it is larger than the sum of its proper divisors (6228811).

80974361 is a wasteful number, since it uses less digits than its factorization.

80974361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228810.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 80974361 is about 8998.5754983775. The cubic root of 80974361 is about 432.6292146244.

The spelling of 80974361 in words is "eighty million, nine hundred seventy-four thousand, three hundred sixty-one".

Divisors: 1 13 6228797 80974361