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30343740 = 22357210321
BaseRepresentation
bin111001111000…
…0001000111100
32010002121210020
41303300020330
530231444430
63002212140
7515626500
oct163601074
963077706
1030343740
1116145779
12a1b4050
13639559b
14405c300
1529e5b10
hex1cf023c

30343740 has 72 divisors (see below), whose sum is σ = 98843472. Its totient is φ = 6935040.

The previous prime is 30343727. The next prime is 30343783. The reversal of 30343740 is 4734303.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30343740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2221 + ... + 8100.

It is an arithmetic number, because the mean of its divisors is an integer number (1372826).

Almost surely, 230343740 is an apocalyptic number.

30343740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30343740 is an abundant number, since it is smaller than the sum of its proper divisors (68499732).

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

30343740 is a wasteful number, since it uses less digits than its factorization.

30343740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347 (or 10338 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 30343740 is about 5508.5152264471. The cubic root of 30343740 is about 311.9055022824.

The spelling of 30343740 in words is "thirty million, three hundred forty-three thousand, seven hundred forty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 10321 20642 30963 41284 51605 61926 72247 103210 123852 144494 154815 206420 216741 288988 309630 361235 433482 505729 619260 722470 866964 1011458 1083705 1444940 1517187 2022916 2167410 2528645 3034374 4334820 5057290 6068748 7585935 10114580 15171870 30343740