Search a number
-
+
30214509 = 313432419
BaseRepresentation
bin111001101000…
…0100101101101
32002212001111220
41303100211231
530213331014
62555333553
7514550643
oct163204555
962761456
1030214509
1116067676
12a1512b9
13634b810
144027193
1529bc6a9
hex1cd096d

30214509 has 24 divisors (see below), whose sum is σ = 44523360. Its totient is φ = 18117792.

The previous prime is 30214507. The next prime is 30214519. The reversal of 30214509 is 90541203.

It is not a de Polignac number, because 30214509 - 21 = 30214507 is a prime.

It is a super-2 number, since 2×302145092 = 1825833108222162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30214501) 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 23 ways as a sum of consecutive naturals, for example, 71902 + ... + 72320.

It is an arithmetic number, because the mean of its divisors is an integer number (1855140).

Almost surely, 230214509 is an apocalyptic number.

30214509 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30214509 is a deficient number, since it is larger than the sum of its proper divisors (14308851).

30214509 is a wasteful number, since it uses less digits than its factorization.

30214509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30214509 is about 5496.7725985345. The cubic root of 30214509 is about 311.4620805844.

The spelling of 30214509 in words is "thirty million, two hundred fourteen thousand, five hundred nine".

Divisors: 1 3 13 39 43 129 419 559 1257 1677 1849 5447 5547 16341 18017 24037 54051 72111 234221 702663 774731 2324193 10071503 30214509