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30380648 = 239713911
BaseRepresentation
bin111001111100…
…1001001101000
32010011111102012
41303321021220
530234140043
63003055052
7516142214
oct163711150
963144365
1030380648
1116170481
12a211488
1363a931c
14406b944
152a01a18
hex1cf9268

30380648 has 16 divisors (see below), whose sum is σ = 57036960. Its totient is φ = 15170800.

The previous prime is 30380641. The next prime is 30380689. The reversal of 30380648 is 84608303.

It is not an unprimeable number, because it can be changed into a prime (30380641) by changing a digit.

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, 5813 + ... + 9723.

It is an arithmetic number, because the mean of its divisors is an integer number (3564810).

Almost surely, 230380648 is an apocalyptic number.

It is an amenable number.

30380648 is a deficient number, since it is larger than the sum of its proper divisors (26656312).

30380648 is a wasteful number, since it uses less digits than its factorization.

30380648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888 (or 4884 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 30380648 is about 5511.8642944107. The cubic root of 30380648 is about 312.0319110468.

The spelling of 30380648 in words is "thirty million, three hundred eighty thousand, six hundred forty-eight".

Divisors: 1 2 4 8 971 1942 3884 3911 7768 7822 15644 31288 3797581 7595162 15190324 30380648