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30008000 = 265311231
BaseRepresentation
bin111001001111…
…0001011000000
32002110120020102
41302132023000
530140224000
62551101532
7513030611
oct162361300
962416212
1030008000
1115a36500
12a0718a8
1362a8819
143db1c08
15297b3d5
hex1c9e2c0

30008000 has 168 divisors, whose sum is σ = 84319872. Its totient is φ = 10560000.

The previous prime is 30007993. The next prime is 30008003. The reversal of 30008000 is 80003.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is not an unprimeable number, because it can be changed into a prime (30008003) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 967985 + ... + 968015.

It is an arithmetic number, because the mean of its divisors is an integer number (501904).

Almost surely, 230008000 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 30008000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42159936).

30008000 is an abundant number, since it is smaller than the sum of its proper divisors (54311872).

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

30008000 is a wasteful number, since it uses less digits than its factorization.

30008000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30008000 is about 5477.9558231150. The cubic root of 30008000 is about 310.7508679851.

Adding to 30008000 its reverse (80003), we get a palindrome (30088003).

The spelling of 30008000 in words is "thirty million, eight thousand".