Search a number
-
+
308345030 = 2574404929
BaseRepresentation
bin10010011000001…
…111100011000110
3210111012112212022
4102120033203012
51112414020110
650332523142
710432614050
oct2230174306
9714175768
10308345030
11149064204
12873204b2
134bb602a6
142cd468d0
151c10b755
hex1260f8c6

308345030 has 16 divisors (see below), whose sum is σ = 634309920. Its totient is φ = 105718272.

The previous prime is 308344973. The next prime is 308345041. The reversal of 308345030 is 30543803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202395 + ... + 2202534.

It is an arithmetic number, because the mean of its divisors is an integer number (39644370).

Almost surely, 2308345030 is an apocalyptic number.

308345030 is an abundant number, since it is smaller than the sum of its proper divisors (325964890).

308345030 is a wasteful number, since it uses less digits than its factorization.

308345030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404943.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 308345030 is about 17559.7559778033. The cubic root of 308345030 is about 675.5834224259.

Adding to 308345030 its reverse (30543803), we get a palindrome (338888833).

The spelling of 308345030 in words is "three hundred eight million, three hundred forty-five thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 4404929 8809858 22024645 30834503 44049290 61669006 154172515 308345030