[go: up one dir, main page]

Search a number
-
+
30384985 = 57438179
BaseRepresentation
bin111001111101…
…0001101011001
32010011201100211
41303322031121
530234304420
63003131121
7516160651
oct163721531
963151324
1030384985
1116173764
12a213aa1
1363ab2a7
14406d361
152a02e5a
hex1cfa359

30384985 has 8 divisors (see below), whose sum is σ = 36515520. Its totient is φ = 24272304.

The previous prime is 30384943. The next prime is 30384989. The reversal of 30384985 is 58948303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30384985 - 217 = 30253913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30384989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 7804.

It is an arithmetic number, because the mean of its divisors is an integer number (4564440).

Almost surely, 230384985 is an apocalyptic number.

It is an amenable number.

30384985 is a deficient number, since it is larger than the sum of its proper divisors (6130535).

30384985 is an equidigital number, since it uses as much as digits as its factorization.

30384985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 30384985 is about 5512.2577044257. The cubic root of 30384985 is about 312.0467584151.

The spelling of 30384985 in words is "thirty million, three hundred eighty-four thousand, nine hundred eighty-five".

Divisors: 1 5 743 3715 8179 40895 6076997 30384985