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30348040 = 2352332987
BaseRepresentation
bin111001111000…
…1001100001000
32010002211200111
41303301030020
530232114130
63002244104
7515645152
oct163611410
963084614
1030348040
1116148a28
12a1b6634
136397528
14405dad2
1529e702a
hex1cf1308

30348040 has 32 divisors (see below), whose sum is σ = 71254080. Its totient is φ = 11611072.

The previous prime is 30348013. The next prime is 30348053. The reversal of 30348040 is 4084303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15574 + ... + 17413.

It is an arithmetic number, because the mean of its divisors is an integer number (2226690).

Almost surely, 230348040 is an apocalyptic number.

It is an amenable number.

30348040 is an abundant number, since it is smaller than the sum of its proper divisors (40906040).

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

30348040 is a wasteful number, since it uses less digits than its factorization.

30348040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33021 (or 33017 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 30348040 is about 5508.9055174327. The cubic root of 30348040 is about 311.9202349237.

The spelling of 30348040 in words is "thirty million, three hundred forty-eight thousand, forty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 32987 65974 131948 164935 263896 329870 659740 758701 1319480 1517402 3034804 3793505 6069608 7587010 15174020 30348040