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30341240 = 2351096959
BaseRepresentation
bin111001110111…
…1100001111000
32010002111100122
41303233201320
530231404430
63002152412
7515616266
oct163574170
963074318
1030341240
1116143906
12a1b2708
1363943c7
14405b436
1529e4ee5
hex1cef878

30341240 has 32 divisors (see below), whose sum is σ = 68904000. Its totient is φ = 12023424.

The previous prime is 30341239. The next prime is 30341249. The reversal of 30341240 is 4214303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30341249) 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, 881 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (2153250).

Almost surely, 230341240 is an apocalyptic number.

It is an amenable number.

30341240 is an abundant number, since it is smaller than the sum of its proper divisors (38562760).

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

30341240 is a wasteful number, since it uses less digits than its factorization.

30341240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079 (or 7075 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30341240 is about 5508.2883003706. The cubic root of 30341240 is about 311.8969361534.

Adding to 30341240 its reverse (4214303), we get a palindrome (34555543).

The spelling of 30341240 in words is "thirty million, three hundred forty-one thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 109 218 436 545 872 1090 2180 4360 6959 13918 27836 34795 55672 69590 139180 278360 758531 1517062 3034124 3792655 6068248 7585310 15170620 30341240