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30150917 = 199915083
BaseRepresentation
bin111001100000…
…1000100000101
32002201211021122
41303001010011
530204312132
62554123325
7514164356
oct163010405
962654248
1030150917
1116023915
12a120545
1363288a4
14400bd2d
1529a8912
hex1cc1105

30150917 has 4 divisors (see below), whose sum is σ = 30168000. Its totient is φ = 30133836.

The previous prime is 30150863. The next prime is 30150919. The reversal of 30150917 is 71905103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30150917 - 28 = 30150661 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 (30150919) 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, 5543 + ... + 9540.

It is an arithmetic number, because the mean of its divisors is an integer number (7542000).

Almost surely, 230150917 is an apocalyptic number.

It is an amenable number.

30150917 is a deficient number, since it is larger than the sum of its proper divisors (17083).

30150917 is a wasteful number, since it uses less digits than its factorization.

30150917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17082.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 30150917 is about 5490.9850664521. The cubic root of 30150917 is about 311.2434173325.

The spelling of 30150917 in words is "thirty million, one hundred fifty thousand, nine hundred seventeen".

Divisors: 1 1999 15083 30150917