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30274560 = 21034573
BaseRepresentation
bin111001101111…
…1010000000000
32002222002220000
41303133100000
530222241220
63000520000
7515221011
oct163372000
962862800
1030274560
11160a87a8
12a180000
13636cc54
144041008
1529d0390
hex1cdf400

30274560 has 220 divisors, whose sum is σ = 109973028. Its totient is φ = 7962624.

The previous prime is 30274549. The next prime is 30274567. The reversal of 30274560 is 6547203.

It is a happy number.

30274560 is a `hidden beast` number, since 30 + 2 + 74 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14017536 + 16257024 = 3744^2 + 4032^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30274567) 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 19 ways as a sum of consecutive naturals, for example, 414684 + ... + 414756.

Almost surely, 230274560 is an apocalyptic number.

30274560 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 30274560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54986514).

30274560 is an abundant number, since it is smaller than the sum of its proper divisors (79698468).

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

30274560 is an equidigital number, since it uses as much as digits as its factorization.

30274560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 30274560 is about 5502.2322742683. The cubic root of 30274560 is about 311.6682865057.

The spelling of 30274560 in words is "thirty million, two hundred seventy-four thousand, five hundred sixty".