Search a number
-
+
30648005 = 522327487
BaseRepresentation
bin111010011101…
…0011011000101
32010200002011022
41310322123011
530321214010
63012520525
7521334533
oct164723305
963602138
1030648005
1116333333
12a320145
136470c1b
1440db153
152a55d55
hex1d3a6c5

30648005 has 8 divisors (see below), whose sum is σ = 36943872. Its totient is φ = 24407568.

The previous prime is 30648001. The next prime is 30648049. The reversal of 30648005 is 50084603.

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 30648005 - 22 = 30648001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30648001) 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, 12629 + ... + 14858.

It is an arithmetic number, because the mean of its divisors is an integer number (4617984).

Almost surely, 230648005 is an apocalyptic number.

It is an amenable number.

30648005 is a deficient number, since it is larger than the sum of its proper divisors (6295867).

30648005 is a wasteful number, since it uses less digits than its factorization.

30648005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27715.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 30648005 is about 5536.0640350343. The cubic root of 30648005 is about 312.9445576792.

The spelling of 30648005 in words is "thirty million, six hundred forty-eight thousand, five".

Divisors: 1 5 223 1115 27487 137435 6129601 30648005