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30137383 = 238315787
BaseRepresentation
bin111001011110…
…1110000100111
32002201010201101
41302331300213
530203344013
62553540531
7514110043
oct162756047
962633641
1030137383
1116014731
12a114747
136322693
144007023
1529a48dd
hex1cbdc27

30137383 has 8 divisors (see below), whose sum is σ = 31828608. Its totient is φ = 28477944.

The previous prime is 30137357. The next prime is 30137389. The reversal of 30137383 is 38373103.

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

It is a cyclic number.

It is not a de Polignac number, because 30137383 - 221 = 28040231 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 (30137389) 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, 5985 + ... + 9802.

It is an arithmetic number, because the mean of its divisors is an integer number (3978576).

Almost surely, 230137383 is an apocalyptic number.

30137383 is a deficient number, since it is larger than the sum of its proper divisors (1691225).

30137383 is a wasteful number, since it uses less digits than its factorization.

30137383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15893.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30137383 is about 5489.7525445142. The cubic root of 30137383 is about 311.1968405419.

The spelling of 30137383 in words is "thirty million, one hundred thirty-seven thousand, three hundred eighty-three".

Divisors: 1 23 83 1909 15787 363101 1310321 30137383