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30268471 = 39776243
BaseRepresentation
bin111001101110…
…1110000110111
32002221210112111
41303131300313
530222042341
63000431451
7515164162
oct163356067
962853474
1030268471
11160a4172
12a178587
13636a24c
14403cad9
1529cd681
hex1cddc37

30268471 has 4 divisors (see below), whose sum is σ = 30345112. Its totient is φ = 30191832.

The previous prime is 30268453. The next prime is 30268487. The reversal of 30268471 is 17486203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30268471 - 217 = 30137399 is a prime.

It is a super-3 number, since 3×302684713 (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 (30268411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37725 + ... + 38518.

It is an arithmetic number, because the mean of its divisors is an integer number (7586278).

Almost surely, 230268471 is an apocalyptic number.

30268471 is a deficient number, since it is larger than the sum of its proper divisors (76641).

30268471 is an equidigital number, since it uses as much as digits as its factorization.

30268471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76640.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 30268471 is about 5501.6789255644. The cubic root of 30268471 is about 311.6473902434.

The spelling of 30268471 in words is "thirty million, two hundred sixty-eight thousand, four hundred seventy-one".

Divisors: 1 397 76243 30268471