Search a number
-
+
15146380 = 225757319
BaseRepresentation
bin111001110001…
…110110001100
31001111111221001
4321301312030
512334141010
61300350044
7242512354
oct71616614
931444831
1015146380
118605777
1250a5324
1331a4172
142023b64
1514e2c3a
hexe71d8c

15146380 has 12 divisors (see below), whose sum is σ = 31807440. Its totient is φ = 6058544.

The previous prime is 15146347. The next prime is 15146387. The reversal of 15146380 is 8364151.

It is not an unprimeable number, because it can be changed into a prime (15146387) 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 3 ways as a sum of consecutive naturals, for example, 378640 + ... + 378679.

It is an arithmetic number, because the mean of its divisors is an integer number (2650620).

Almost surely, 215146380 is an apocalyptic number.

15146380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15146380 is an abundant number, since it is smaller than the sum of its proper divisors (16661060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15146380 is a wasteful number, since it uses less digits than its factorization.

15146380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757328 (or 757326 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 15146380 is about 3891.8350427530. The cubic root of 15146380 is about 247.4208433053.

The spelling of 15146380 in words is "fifteen million, one hundred forty-six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 757319 1514638 3029276 3786595 7573190 15146380