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30248653 = 293133647
BaseRepresentation
bin111001101100…
…0111011001101
32002220210100111
41303120323031
530220424103
63000200021
7515052331
oct163307315
962823314
1030248653
1116090296
12a169011
136361216
1440357c1
1529c786d
hex1cd8ecd

30248653 has 8 divisors (see below), whose sum is σ = 32302080. Its totient is φ = 28262640.

The previous prime is 30248629. The next prime is 30248671. The reversal of 30248653 is 35684203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30248653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30248453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15925 + ... + 17722.

It is an arithmetic number, because the mean of its divisors is an integer number (4037760).

Almost surely, 230248653 is an apocalyptic number.

It is an amenable number.

30248653 is a deficient number, since it is larger than the sum of its proper divisors (2053427).

30248653 is a wasteful number, since it uses less digits than its factorization.

30248653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33707.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 30248653 is about 5499.8775440913. The cubic root of 30248653 is about 311.5793593165.

The spelling of 30248653 in words is "thirty million, two hundred forty-eight thousand, six hundred fifty-three".

Divisors: 1 29 31 899 33647 975763 1043057 30248653