[go: up one dir, main page]

Search a number
-
+
30741420 = 22354211217
BaseRepresentation
bin111010101000…
…1001110101100
32010211211022010
41311101032230
530332211140
63014521220
7522204063
oct165211654
963754263
1030741420
1116397536
12a366210
1364a45b8
1441231da
152a73880
hex1d513ac

30741420 has 48 divisors (see below), whose sum is σ = 86351328. Its totient is φ = 8171520.

The previous prime is 30741407. The next prime is 30741433. The reversal of 30741420 is 2414703.

It is an interprime number because it is at equal distance from previous prime (30741407) and next prime (30741433).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24652 + ... + 25868.

It is an arithmetic number, because the mean of its divisors is an integer number (1798986).

Almost surely, 230741420 is an apocalyptic number.

30741420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30741420 is an abundant number, since it is smaller than the sum of its proper divisors (55609908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30741420 is a wasteful number, since it uses less digits than its factorization.

30741420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 30741420 is about 5544.4945666850. The cubic root of 30741420 is about 313.2621864518.

The spelling of 30741420 in words is "thirty million, seven hundred forty-one thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 421 842 1217 1263 1684 2105 2434 2526 3651 4210 4868 5052 6085 6315 7302 8420 12170 12630 14604 18255 24340 25260 36510 73020 512357 1024714 1537071 2049428 2561785 3074142 5123570 6148284 7685355 10247140 15370710 30741420