Search a number
-
+
15148231 = 76732299
BaseRepresentation
bin111001110010…
…010011000111
31001111121110121
4321302103013
512334220411
61300402411
7242520640
oct71622307
931447417
1015148231
1186070aa
1250a6407
1331a4c67
1420246c7
1514e3571
hexe724c7

15148231 has 8 divisors (see below), whose sum is σ = 17571200. Its totient is φ = 12790008.

The previous prime is 15148223. The next prime is 15148249. The reversal of 15148231 is 13284151.

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

It is not a de Polignac number, because 15148231 - 23 = 15148223 is a prime.

It is a super-2 number, since 2×151482312 = 458937804858722, 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 = 15148196 and 15148205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15148201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15681 + ... + 16618.

It is an arithmetic number, because the mean of its divisors is an integer number (2196400).

Almost surely, 215148231 is an apocalyptic number.

15148231 is a deficient number, since it is larger than the sum of its proper divisors (2422969).

15148231 is an equidigital number, since it uses as much as digits as its factorization.

15148231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32373.

The product of its digits is 960, while the sum is 25.

The square root of 15148231 is about 3892.0728410450. The cubic root of 15148231 is about 247.4309217822.

The spelling of 15148231 in words is "fifteen million, one hundred forty-eight thousand, two hundred thirty-one".

Divisors: 1 7 67 469 32299 226093 2164033 15148231