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30274471 = 71426401
BaseRepresentation
bin111001101111…
…1001110100111
32002222002202201
41303133032213
530222240341
63000515331
7515220523
oct163371647
962862681
1030274471
11160a8727
12a17bb47
13636cbb6
144040d83
1529d0331
hex1cdf3a7

30274471 has 4 divisors (see below), whose sum is σ = 30700944. Its totient is φ = 29848000.

The previous prime is 30274469. The next prime is 30274477. The reversal of 30274471 is 17447203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17447203 = 31562813.

It is a cyclic number.

It is not a de Polignac number, because 30274471 - 21 = 30274469 is a prime.

It is a super-3 number, since 3×302744713 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30274477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213130 + ... + 213271.

It is an arithmetic number, because the mean of its divisors is an integer number (7675236).

Almost surely, 230274471 is an apocalyptic number.

30274471 is a deficient number, since it is larger than the sum of its proper divisors (426473).

30274471 is an equidigital number, since it uses as much as digits as its factorization.

30274471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426472.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 30274471 is about 5502.2241866358. The cubic root of 30274471 is about 311.6679810952.

The spelling of 30274471 in words is "thirty million, two hundred seventy-four thousand, four hundred seventy-one".

Divisors: 1 71 426401 30274471