Search a number
-
+
12892831 = 72263119
BaseRepresentation
bin110001001011…
…101010011111
3220021000122021
4301023222133
511300032311
61140201011
7214405300
oct61135237
926230567
1012892831
117306636
124399167
1328954c3
1419d87a7
1511ea171
hexc4ba9f

12892831 has 6 divisors (see below), whose sum is σ = 14997840. Its totient is φ = 11050956.

The previous prime is 12892829. The next prime is 12892837. The reversal of 12892831 is 13829821.

It is not a de Polignac number, because 12892831 - 21 = 12892829 is a prime.

It is a super-2 number, since 2×128928312 = 332450182389122, 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 (12892837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131511 + ... + 131608.

It is an arithmetic number, because the mean of its divisors is an integer number (2499640).

Almost surely, 212892831 is an apocalyptic number.

12892831 is a deficient number, since it is larger than the sum of its proper divisors (2105009).

12892831 is an equidigital number, since it uses as much as digits as its factorization.

12892831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263133 (or 263126 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 12892831 is about 3590.6588531912. The cubic root of 12892831 is about 234.4855563986.

The spelling of 12892831 in words is "twelve million, eight hundred ninety-two thousand, eight hundred thirty-one".

Divisors: 1 7 49 263119 1841833 12892831