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30248677 = 277109201
BaseRepresentation
bin111001101100…
…0111011100101
32002220210101101
41303120323211
530220424202
63000200101
7515052364
oct163307345
962823341
1030248677
1116090308
12a169031
136361234
1440357db
1529c7887
hex1cd8ee5

30248677 has 4 divisors (see below), whose sum is σ = 30358156. Its totient is φ = 30139200.

The previous prime is 30248671. The next prime is 30248717. The reversal of 30248677 is 77684203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77684203 = 174569659.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 14638276 = 3951^2 + 3826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30248677 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 (30248671) 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, 54324 + ... + 54877.

It is an arithmetic number, because the mean of its divisors is an integer number (7589539).

Almost surely, 230248677 is an apocalyptic number.

It is an amenable number.

30248677 is a deficient number, since it is larger than the sum of its proper divisors (109479).

30248677 is a wasteful number, since it uses less digits than its factorization.

30248677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109478.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 30248677 is about 5499.8797259577. The cubic root of 30248677 is about 311.5794417213.

The spelling of 30248677 in words is "thirty million, two hundred forty-eight thousand, six hundred seventy-seven".

Divisors: 1 277 109201 30248677