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30726080 = 2657112943
BaseRepresentation
bin111010100110…
…1011111000000
32010211001020222
41311031133000
530331213310
63014322212
7522111260
oct165153700
963731228
1030726080
1116386a60
12a359368
13649a618
14411b7a0
152a6e055
hex1d4d7c0

30726080 has 224 divisors, whose sum is σ = 96560640. Its totient is φ = 9031680.

The previous prime is 30726067. The next prime is 30726083. The reversal of 30726080 is 8062703.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30726083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714539 + ... + 714581.

Almost surely, 230726080 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 30726080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48280320).

30726080 is an abundant number, since it is smaller than the sum of its proper divisors (65834560).

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

30726080 is a wasteful number, since it uses less digits than its factorization.

30726080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30726080 is about 5543.1110398404. Note that the first 3 decimals coincide. The cubic root of 30726080 is about 313.2100717320.

Adding to 30726080 its reverse (8062703), we get a palindrome (38788783).

The spelling of 30726080 in words is "thirty million, seven hundred twenty-six thousand, eighty".