Search a number
-
+
307391234 = 21971113933
BaseRepresentation
bin10010010100100…
…110101100000010
3210102102002111112
4102110212230002
51112143004414
650300243322
710421532233
oct2224465402
9712362445
10307391234
11148572647
1286b40542
134b8b8107
142cb7908a
151bebdd3e
hex12526b02

307391234 has 16 divisors (see below), whose sum is σ = 492194880. Its totient is φ = 143554320.

The previous prime is 307391191. The next prime is 307391269. The reversal of 307391234 is 432193703.

It is a self number, because there is not a number n which added to its sum of digits gives 307391234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54269 + ... + 59664.

It is an arithmetic number, because the mean of its divisors is an integer number (30762180).

Almost surely, 2307391234 is an apocalyptic number.

307391234 is a deficient number, since it is larger than the sum of its proper divisors (184803646).

307391234 is a wasteful number, since it uses less digits than its factorization.

307391234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114025.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 307391234 is about 17532.5763651552. The cubic root of 307391234 is about 674.8861144855.

The spelling of 307391234 in words is "three hundred seven million, three hundred ninety-one thousand, two hundred thirty-four".

Divisors: 1 2 19 38 71 142 1349 2698 113933 227866 2164727 4329454 8089243 16178486 153695617 307391234