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30737345 = 519217029
BaseRepresentation
bin111010101000…
…0001111000001
32010211121201012
41311100033001
530332043340
63014450305
7522156152
oct165201701
963747635
1030737345
1116394471
12a363995
1364a27a2
144121929
152a72565
hex1d503c1

30737345 has 12 divisors (see below), whose sum is σ = 38930580. Its totient is φ = 23294304.

The previous prime is 30737339. The next prime is 30737347. The reversal of 30737345 is 54373703.

It can be written as a sum of positive squares in 2 ways, for example, as 18113536 + 12623809 = 4256^2 + 3553^2 .

It is not a de Polignac number, because 30737345 - 26 = 30737281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30737347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6710 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (3244215).

Almost surely, 230737345 is an apocalyptic number.

It is an amenable number.

30737345 is a deficient number, since it is larger than the sum of its proper divisors (8193235).

30737345 is a wasteful number, since it uses less digits than its factorization.

30737345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17072 (or 17053 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 32.

The square root of 30737345 is about 5544.1270728583. The cubic root of 30737345 is about 313.2483441090.

The spelling of 30737345 in words is "thirty million, seven hundred thirty-seven thousand, three hundred forty-five".

Divisors: 1 5 19 95 361 1805 17029 85145 323551 1617755 6147469 30737345