Search a number
-
+
10128831 = 310933089
BaseRepresentation
bin100110101000…
…110110111111
3201001121010220
4212220312333
510043110311
61001032423
7152044056
oct46506677
921047126
1010128831
115798a39
123485713
1321383bb
1414b939d
15d51206
hex9a8dbf

10128831 has 8 divisors (see below), whose sum is σ = 13521840. Its totient is φ = 6744192.

The previous prime is 10128817. The next prime is 10128841. The reversal of 10128831 is 13882101.

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

It is not a de Polignac number, because 10128831 - 29 = 10128319 is a prime.

It is a super-2 number, since 2×101288312 = 205186434853122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10128841) 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, 1735 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (1690230).

Almost surely, 210128831 is an apocalyptic number.

10128831 is a deficient number, since it is larger than the sum of its proper divisors (3393009).

10128831 is a wasteful number, since it uses less digits than its factorization.

10128831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 10128831 is about 3182.5824419801. The cubic root of 10128831 is about 216.3647173307.

The spelling of 10128831 in words is "ten million, one hundred twenty-eight thousand, eight hundred thirty-one".

Divisors: 1 3 1093 3089 3279 9267 3376277 10128831