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30074081 = 371097457
BaseRepresentation
bin111001010111…
…0010011100001
32002120220212212
41302232103201
530144332311
62552331505
7513424352
oct162562341
962526785
1030074081
1115a81114
12a0a3b95
1362cc91b
143dcbd29
152990c8b
hex1cae4e1

30074081 has 8 divisors (see below), whose sum is σ = 31174440. Its totient is φ = 28988928.

The previous prime is 30074059. The next prime is 30074111. The reversal of 30074081 is 18047003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10137856 + 19936225 = 3184^2 + 4465^2 .

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 30074081 - 214 = 30057697 is a prime.

It is a super-2 number, since 2×300740812 = 1808900695989122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30074021) 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 7 ways as a sum of consecutive naturals, for example, 305 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (3896805).

Almost surely, 230074081 is an apocalyptic number.

It is an amenable number.

30074081 is a deficient number, since it is larger than the sum of its proper divisors (1100359).

30074081 is a wasteful number, since it uses less digits than its factorization.

30074081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7603.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 30074081 is about 5483.9840444699. The cubic root of 30074081 is about 310.9788035719.

The spelling of 30074081 in words is "thirty million, seventy-four thousand, eighty-one".

Divisors: 1 37 109 4033 7457 275909 812813 30074081