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30627072 = 28347211
BaseRepresentation
bin111010011010…
…1010100000000
32010122000110000
41310311110000
530320031242
63012240000
7521216520
oct164652400
963560400
1030627072
1116319633
12a310000
136464538
1440d3680
152a4ea4c
hex1d35500

30627072 has 180 divisors, whose sum is σ = 104865376. Its totient is φ = 8709120.

The previous prime is 30627061. The next prime is 30627073. The reversal of 30627072 is 27072603.

30627072 is a `hidden beast` number, since 30 + 627 + 0 + 7 + 2 = 666.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30627073) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 145047 + ... + 145257.

Almost surely, 230627072 is an apocalyptic number.

30627072 is a gapful number since it is divisible by the number (32) 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 30627072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52432688).

30627072 is an abundant number, since it is smaller than the sum of its proper divisors (74238304).

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

30627072 is an equidigital number, since it uses as much as digits as its factorization.

30627072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 30627072 is about 5534.1731089658. The cubic root of 30627072 is about 312.8732930032.

Adding to 30627072 its reverse (27072603), we get a palindrome (57699675).

The spelling of 30627072 in words is "thirty million, six hundred twenty-seven thousand, seventy-two".