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30708898 = 2111395859
BaseRepresentation
bin111010100100…
…1010010100010
32010210011200121
41311021102202
530330141043
63014110454
7522010213
oct165112242
963704617
1030708898
1116375060
12a34b42a
13649285c
14411540a
152a68ded
hex1d494a2

30708898 has 8 divisors (see below), whose sum is σ = 50250960. Its totient is φ = 13958580.

The previous prime is 30708869. The next prime is 30708901. The reversal of 30708898 is 89880703.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 697908 + ... + 697951.

It is an arithmetic number, because the mean of its divisors is an integer number (6281370).

Almost surely, 230708898 is an apocalyptic number.

30708898 is a deficient number, since it is larger than the sum of its proper divisors (19542062).

30708898 is a wasteful number, since it uses less digits than its factorization.

30708898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395872.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 30708898 is about 5541.5609714231. The cubic root of 30708898 is about 313.1516785701.

The spelling of 30708898 in words is "thirty million, seven hundred eight thousand, eight hundred ninety-eight".

Divisors: 1 2 11 22 1395859 2791718 15354449 30708898