Search a number
-
+
80605131 = 328195617
BaseRepresentation
bin1001100110111…
…10111111001011
312121200011110020
410303132333023
5131113331011
611555351523
71666063245
oct463367713
9177604406
1080605131
1141554912
1222bb25a3
1313912959
14a9c3095
157123006
hex4cdefcb

80605131 has 8 divisors (see below), whose sum is σ = 107857104. Its totient is φ = 53544960.

The previous prime is 80605121. The next prime is 80605199. The reversal of 80605131 is 13150608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80605131 - 27 = 80605003 is a prime.

It is a super-2 number, since 2×806051312 = 12994374287054322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80605121) 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, 46966 + ... + 48651.

It is an arithmetic number, because the mean of its divisors is an integer number (13482138).

Almost surely, 280605131 is an apocalyptic number.

80605131 is a deficient number, since it is larger than the sum of its proper divisors (27251973).

80605131 is a wasteful number, since it uses less digits than its factorization.

80605131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95901.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 80605131 is about 8978.0360324516. The cubic root of 80605131 is about 431.9706395084.

Adding to 80605131 its reverse (13150608), we get a palindrome (93755739).

The spelling of 80605131 in words is "eighty million, six hundred five thousand, one hundred thirty-one".

Divisors: 1 3 281 843 95617 286851 26868377 80605131