Search a number
-
+
7390382805 = 3251353238361
BaseRepresentation
bin1101110001000000…
…00100101011010101
3201002001022100022200
412320200010223111
5110113414222210
63221201315113
7351066134361
oct67040045325
921061270280
107390382805
113152750a93
121523035a99
1390a15aca0
1450173a2a1
152d3c2d0c0
hex1b8804ad5

7390382805 has 48 divisors (see below), whose sum is σ = 14055730416. Its totient is φ = 3569679360.

The previous prime is 7390382803. The next prime is 7390382819. The reversal of 7390382805 is 5082830937.

It can be written as a sum of positive squares in 8 ways, for example, as 116510436 + 7273872369 = 10794^2 + 85287^2 .

It is not a de Polignac number, because 7390382805 - 21 = 7390382803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7390382803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88176 + ... + 150185.

It is an arithmetic number, because the mean of its divisors is an integer number (292827717).

Almost surely, 27390382805 is an apocalyptic number.

It is an amenable number.

7390382805 is a deficient number, since it is larger than the sum of its proper divisors (6665347611).

7390382805 is a wasteful number, since it uses less digits than its factorization.

7390382805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238438 (or 238435 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 7390382805 is about 85967.3356862942. The cubic root of 7390382805 is about 1947.8506060529.

The spelling of 7390382805 in words is "seven billion, three hundred ninety million, three hundred eighty-two thousand, eight hundred five".

Divisors: 1 3 5 9 13 15 39 45 53 65 117 159 195 265 477 585 689 795 2067 2385 3445 6201 10335 31005 238361 715083 1191805 2145249 3098693 3575415 9296079 10726245 12633133 15493465 27888237 37899399 46480395 63165665 113698197 139441185 164230729 189496995 492692187 568490985 821153645 1478076561 2463460935 7390382805