Search a number
-
+
80230871 = 717838123
BaseRepresentation
bin1001100100000…
…11100111010111
312120222011001202
410302003213113
5131014341441
611543343115
71662644150
oct462034727
9176864052
1080230871
1141319706
1222a51a9b
13138114b6
14a926927
15709c19b
hex4c839d7

80230871 has 16 divisors (see below), whose sum is σ = 98267904. Its totient is φ = 63936384.

The previous prime is 80230807. The next prime is 80230879. The reversal of 80230871 is 17803208.

It is a cyclic number.

It is not a de Polignac number, because 80230871 - 26 = 80230807 is a prime.

It is a super-2 number, since 2×802308712 = 12873985322837282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80230879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5816 + ... + 13938.

It is an arithmetic number, because the mean of its divisors is an integer number (6141744).

Almost surely, 280230871 is an apocalyptic number.

80230871 is a deficient number, since it is larger than the sum of its proper divisors (18037033).

80230871 is a wasteful number, since it uses less digits than its factorization.

80230871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8230.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 80230871 is about 8957.1686932870. The cubic root of 80230871 is about 431.3010369899.

The spelling of 80230871 in words is "eighty million, two hundred thirty thousand, eight hundred seventy-one".

Divisors: 1 7 17 83 119 581 1411 8123 9877 56861 138091 674209 966637 4719463 11461553 80230871