Search a number
-
+
10387305 = 33576943
BaseRepresentation
bin100111100111…
…111101101001
3201112201201000
4213213331221
510124343210
61010345213
7154201455
oct47477551
921481630
1010387305
115955155
12358b209
1321c8c46
141545665
15da2ac0
hex9e7f69

10387305 has 16 divisors (see below), whose sum is σ = 18466560. Its totient is φ = 5539824.

The previous prime is 10387297. The next prime is 10387313. The reversal of 10387305 is 50378301.

It is an interprime number because it is at equal distance from previous prime (10387297) and next prime (10387313).

It is not a de Polignac number, because 10387305 - 23 = 10387297 is a prime.

It is a super-2 number, since 2×103873052 = 215792210326050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38337 + ... + 38606.

It is an arithmetic number, because the mean of its divisors is an integer number (1154160).

Almost surely, 210387305 is an apocalyptic number.

10387305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10387305 is a deficient number, since it is larger than the sum of its proper divisors (8079255).

10387305 is an equidigital number, since it uses as much as digits as its factorization.

10387305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76957 (or 76951 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 10387305 is about 3222.9342221026. The cubic root of 10387305 is about 218.1897248555.

The spelling of 10387305 in words is "ten million, three hundred eighty-seven thousand, three hundred five".

Divisors: 1 3 5 9 15 27 45 135 76943 230829 384715 692487 1154145 2077461 3462435 10387305