Search a number
-
+
30038071 = 712373469
BaseRepresentation
bin111001010010…
…1100000110111
32002112002111011
41302211200313
530142204241
62551453051
7513214360
oct162454067
962462434
1030038071
1115a57058
12a087187
1362b940b
143dbcb67
152985281
hex1ca5837

30038071 has 8 divisors (see below), whose sum is σ = 34366880. Its totient is φ = 25718688.

The previous prime is 30038033. The next prime is 30038077. The reversal of 30038071 is 17083003.

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 30038071 - 211 = 30036023 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 (30038077) by changing a digit.

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, 6925 + ... + 10393.

It is an arithmetic number, because the mean of its divisors is an integer number (4295860).

Almost surely, 230038071 is an apocalyptic number.

30038071 is a deficient number, since it is larger than the sum of its proper divisors (4328809).

30038071 is a wasteful number, since it uses less digits than its factorization.

30038071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 30038071 is about 5480.6998640685. The cubic root of 30038071 is about 310.8546344217.

The spelling of 30038071 in words is "thirty million, thirty-eight thousand, seventy-one".

Divisors: 1 7 1237 3469 8659 24283 4291153 30038071