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30065161 = 75972797
BaseRepresentation
bin111001010110…
…0001000001001
32002120110122111
41302230020021
530144041121
62552222321
7513356350
oct162541011
962513574
1030065161
1115a75445
12a09a9a1
1362c8849
143dc8997
15298d2e1
hex1cac209

30065161 has 8 divisors (see below), whose sum is σ = 34943040. Its totient is φ = 25333008.

The previous prime is 30065159. The next prime is 30065171. The reversal of 30065161 is 16156003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30065161 - 21 = 30065159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30065171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35986 + ... + 36811.

It is an arithmetic number, because the mean of its divisors is an integer number (4367880).

Almost surely, 230065161 is an apocalyptic number.

It is an amenable number.

30065161 is a deficient number, since it is larger than the sum of its proper divisors (4877879).

30065161 is an equidigital number, since it uses as much as digits as its factorization.

30065161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72863.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 30065161 is about 5483.1707068082. The cubic root of 30065161 is about 310.9480549989.

The spelling of 30065161 in words is "thirty million, sixty-five thousand, one hundred sixty-one".

Divisors: 1 7 59 413 72797 509579 4295023 30065161