[go: up one dir, main page]

Search a number
-
+
15230208 = 28372833
BaseRepresentation
bin111010000110…
…010100000000
31001122202220210
4322012110000
512344331313
61302234120
7243311640
oct72062400
931582823
1015230208
118662754
125125940
133203376
142046520
15150c9c3
hexe86500

15230208 has 72 divisors (see below), whose sum is σ = 46341568. Its totient is φ = 4349952.

The previous prime is 15230203. The next prime is 15230219. The reversal of 15230208 is 80203251.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15230203) 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, 3960 + ... + 6792.

Almost surely, 215230208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15230208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23170784).

15230208 is an abundant number, since it is smaller than the sum of its proper divisors (31111360).

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

15230208 is an equidigital number, since it uses as much as digits as its factorization.

15230208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 15230208 is about 3902.5899092782. The cubic root of 15230208 is about 247.8764559818.

Adding to 15230208 its reverse (80203251), we get a palindrome (95433459).

The spelling of 15230208 in words is "fifteen million, two hundred thirty thousand, two hundred eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 672 768 896 1344 1792 2688 2833 5376 5666 8499 11332 16998 19831 22664 33996 39662 45328 59493 67992 79324 90656 118986 135984 158648 181312 237972 271968 317296 362624 475944 543936 634592 725248 951888 1087872 1269184 1903776 2175744 2538368 3807552 5076736 7615104 15230208