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30465808 = 2431239257
BaseRepresentation
bin111010000110…
…1111100010000
32010022211020021
41310031330100
530244401213
63004553224
7516645412
oct164157420
963284207
1030465808
111621945a
12a252814
136409009
1440909b2
152a1bd8d
hex1d0df10

30465808 has 40 divisors (see below), whose sum is σ = 61424640. Its totient is φ = 14622720.

The previous prime is 30465803. The next prime is 30465821. The reversal of 30465808 is 80856403.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30465803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118416 + ... + 118672.

It is an arithmetic number, because the mean of its divisors is an integer number (1535616).

Almost surely, 230465808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30465808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30712320).

30465808 is an abundant number, since it is smaller than the sum of its proper divisors (30958832).

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

30465808 is a wasteful number, since it uses less digits than its factorization.

30465808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 30465808 is about 5519.5840422988. The cubic root of 30465808 is about 312.3231912893.

The spelling of 30465808 in words is "thirty million, four hundred sixty-five thousand, eight hundred eight".

Divisors: 1 2 4 8 16 31 62 124 239 248 257 478 496 514 956 1028 1912 2056 3824 4112 7409 7967 14818 15934 29636 31868 59272 61423 63736 118544 122846 127472 245692 491384 982768 1904113 3808226 7616452 15232904 30465808