Search a number
-
+
15012330 = 2352321757
BaseRepresentation
bin111001010001…
…000111101010
31001020201001020
4321101013222
512320343310
61253433310
7241413504
oct71210752
931221036
1015012330
118523a93
12503b836
133158148
141dcad74
1514b8170
hexe511ea

15012330 has 32 divisors (see below), whose sum is σ = 37597824. Its totient is φ = 3829056.

The previous prime is 15012287. The next prime is 15012331. The reversal of 15012330 is 3321051.

It is a happy number.

15012330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (15012331) 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, 10189 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (1174932).

Almost surely, 215012330 is an apocalyptic number.

15012330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15012330 is an abundant number, since it is smaller than the sum of its proper divisors (22585494).

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

15012330 is a wasteful number, since it uses less digits than its factorization.

15012330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21790.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 15012330 is about 3874.5748153830. The cubic root of 15012330 is about 246.6887631370.

Adding to 15012330 its reverse (3321051), we get a palindrome (18333381).

The spelling of 15012330 in words is "fifteen million, twelve thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 21757 43514 65271 108785 130542 217570 326355 500411 652710 1000822 1501233 2502055 3002466 5004110 7506165 15012330