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30512119 = 1119145991
BaseRepresentation
bin111010001100…
…1001111110111
32010102011202111
41310121033313
530302341434
63005551451
7520230421
oct164311767
963364674
1030512119
1116250230
12a275587
136424111
1440a3811
152a2a964
hex1d193f7

30512119 has 8 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 26278200.

The previous prime is 30512113. The next prime is 30512129. The reversal of 30512119 is 91121503.

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 30512119 - 219 = 29987831 is a prime.

It is a super-2 number, since 2×305121192 = 1861978811740322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30512119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512113) 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, 72787 + ... + 73204.

It is an arithmetic number, because the mean of its divisors is an integer number (4379760).

Almost surely, 230512119 is an apocalyptic number.

30512119 is a deficient number, since it is larger than the sum of its proper divisors (4525961).

30512119 is a wasteful number, since it uses less digits than its factorization.

30512119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146021.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 30512119 is about 5523.7776023298. Note that the first 3 decimals coincide. The cubic root of 30512119 is about 312.4813650755.

The spelling of 30512119 in words is "thirty million, five hundred twelve thousand, one hundred nineteen".

Divisors: 1 11 19 209 145991 1605901 2773829 30512119