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30050447 = 74292921
BaseRepresentation
bin111001010100…
…0100010001111
32002112201110112
41302220202033
530143103242
62552030235
7513265430
oct162504217
962481415
1030050447
1115a65389
12a09237b
1362c1c3b
143dc3487
152988c82
hex1ca888f

30050447 has 4 divisors (see below), whose sum is σ = 34343376. Its totient is φ = 25757520.

The previous prime is 30050431. The next prime is 30050459. The reversal of 30050447 is 74405003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74405003 = 154348221.

It is a cyclic number.

It is not a de Polignac number, because 30050447 - 24 = 30050431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30050047) 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, 2146454 + ... + 2146467.

It is an arithmetic number, because the mean of its divisors is an integer number (8585844).

Almost surely, 230050447 is an apocalyptic number.

30050447 is a deficient number, since it is larger than the sum of its proper divisors (4292929).

30050447 is an equidigital number, since it uses as much as digits as its factorization.

30050447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292928.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 30050447 is about 5481.8288006832. The cubic root of 30050447 is about 310.8973203488.

The spelling of 30050447 in words is "thirty million, fifty thousand, four hundred forty-seven".

Divisors: 1 7 4292921 30050447