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30248141 = 73118017
BaseRepresentation
bin111001101100…
…0110011001101
32002220202122112
41303120303031
530220420031
63000153405
7515051000
oct163306315
962822575
1030248141
111608a970
12a168865
136360c11
144035537
1529c762b
hex1cd8ccd

30248141 has 16 divisors (see below), whose sum is σ = 38486400. Its totient is φ = 23567040.

The previous prime is 30248137. The next prime is 30248143. The reversal of 30248141 is 14184203.

It is not a de Polignac number, because 30248141 - 22 = 30248137 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 (30248143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236 + ... + 7781.

It is an arithmetic number, because the mean of its divisors is an integer number (2405400).

Almost surely, 230248141 is an apocalyptic number.

It is an amenable number.

30248141 is a deficient number, since it is larger than the sum of its proper divisors (8238259).

30248141 is an equidigital number, since it uses as much as digits as its factorization.

30248141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8049 (or 8035 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 30248141 is about 5499.8309974035. The cubic root of 30248141 is about 311.5776013370.

The spelling of 30248141 in words is "thirty million, two hundred forty-eight thousand, one hundred forty-one".

Divisors: 1 7 11 49 77 343 539 3773 8017 56119 88187 392833 617309 2749831 4321163 30248141