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30170880 = 2835597
BaseRepresentation
bin111001100010…
…1111100000000
32002202211200000
41303011330000
530210432010
62554400000
7514306515
oct163057400
962684600
1030170880
1116037913
12a130000
1363349bc
14401530c
1529ae7c0
hex1cc5f00

30170880 has 216 divisors, whose sum is σ = 109370352. Its totient is φ = 7962624.

The previous prime is 30170867. The next prime is 30170891. The reversal of 30170880 is 8807103.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 310992 + ... + 311088.

Almost surely, 230170880 is an apocalyptic number.

30170880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30170880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54685176).

30170880 is an abundant number, since it is smaller than the sum of its proper divisors (79199472).

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

30170880 is an frugal number, since it uses more digits than its factorization.

30170880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 30170880 is about 5492.8025633551. The cubic root of 30170880 is about 311.3120938679.

Adding to 30170880 its reverse (8807103), we get a palindrome (38977983).

The spelling of 30170880 in words is "thirty million, one hundred seventy thousand, eight hundred eighty".