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30380488 = 2318120981
BaseRepresentation
bin111001111100…
…1000111001000
32010011111012021
41303321013020
530234133423
63003054224
7516141565
oct163710710
963144167
1030380488
1116170346
12a211374
1363a9228
14406b86c
152a0195d
hex1cf91c8

30380488 has 16 divisors (see below), whose sum is σ = 57280860. Its totient is φ = 15105600.

The previous prime is 30380461. The next prime is 30380503. The reversal of 30380488 is 88408303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27060804 + 3319684 = 5202^2 + 1822^2 .

It is a super-2 number, since 2×303804882 = 1845948102236288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 9043 + ... + 11938.

Almost surely, 230380488 is an apocalyptic number.

It is an amenable number.

30380488 is a deficient number, since it is larger than the sum of its proper divisors (26900372).

30380488 is a wasteful number, since it uses less digits than its factorization.

30380488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21168 (or 21164 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 30380488 is about 5511.8497802462. The cubic root of 30380488 is about 312.0313632728.

The spelling of 30380488 in words is "thirty million, three hundred eighty thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 181 362 724 1448 20981 41962 83924 167848 3797561 7595122 15190244 30380488