Search a number
-
+
30869530 = 256194987
BaseRepresentation
bin111010111000…
…0100000011010
32011002100000221
41311300200122
530400311110
63021350254
7523246426
oct165604032
964070027
1030869530
111647480a
12a40838a
13651a9c3
144157b86
152a9b7da
hex1d7081a

30869530 has 16 divisors (see below), whose sum is σ = 55666080. Its totient is φ = 12325392.

The previous prime is 30869491. The next prime is 30869533. The reversal of 30869530 is 3596803.

It is not an unprimeable number, because it can be changed into a prime (30869533) by changing a digit.

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, 3697 + ... + 8683.

It is an arithmetic number, because the mean of its divisors is an integer number (3479130).

Almost surely, 230869530 is an apocalyptic number.

30869530 is a deficient number, since it is larger than the sum of its proper divisors (24796550).

30869530 is a wasteful number, since it uses less digits than its factorization.

30869530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30869530 is about 5556.0354570503. The cubic root of 30869530 is about 313.6967402175.

It can be divided in two parts, 308 and 69530, that multiplied together give a triangular number (21415240 = T6544).

The spelling of 30869530 in words is "thirty million, eight hundred sixty-nine thousand, five hundred thirty".

Divisors: 1 2 5 10 619 1238 3095 4987 6190 9974 24935 49870 3086953 6173906 15434765 30869530