Search a number
-
+
80504431 = 716676899
BaseRepresentation
bin1001100110001…
…10011001101111
312121111001022121
410303012121233
5131102120211
611553253411
71665163540
oct463063157
9177431277
1080504431
1141496197
1222b64267
13138a8b77
14a9984c7
157103271
hex4cc666f

80504431 has 8 divisors (see below), whose sum is σ = 92073600. Its totient is φ = 68952408.

The previous prime is 80504429. The next prime is 80504483. The reversal of 80504431 is 13440508.

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

It is not a de Polignac number, because 80504431 - 21 = 80504429 is a prime.

It is a super-2 number, since 2×805044312 = 12961926821267522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80504396 and 80504405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80504731) 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, 8220 + ... + 15118.

It is an arithmetic number, because the mean of its divisors is an integer number (11509200).

Almost surely, 280504431 is an apocalyptic number.

80504431 is a deficient number, since it is larger than the sum of its proper divisors (11569169).

80504431 is a wasteful number, since it uses less digits than its factorization.

80504431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 80504431 is about 8972.4261490413. The cubic root of 80504431 is about 431.7906775545.

Adding to 80504431 its reverse (13440508), we get a palindrome (93944939).

The spelling of 80504431 in words is "eighty million, five hundred four thousand, four hundred thirty-one".

Divisors: 1 7 1667 6899 11669 48293 11500633 80504431