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30519269 = 112774479
BaseRepresentation
bin111010001101…
…0111111100101
32010102112120022
41310122333211
530303104034
63010044525
7520260314
oct164327745
963375508
1030519269
1116255640
12a279745
136427451
1440a627b
152a2cb2e
hex1d1afe5

30519269 has 4 divisors (see below), whose sum is σ = 33293760. Its totient is φ = 27744780.

The previous prime is 30519259. The next prime is 30519277. The reversal of 30519269 is 96291503.

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 30519269 - 216 = 30453733 is a prime.

It is a super-2 number, since 2×305192692 = 1862851560588722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30519259) 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, 1387229 + ... + 1387250.

It is an arithmetic number, because the mean of its divisors is an integer number (8323440).

Almost surely, 230519269 is an apocalyptic number.

It is an amenable number.

30519269 is a deficient number, since it is larger than the sum of its proper divisors (2774491).

30519269 is a wasteful number, since it uses less digits than its factorization.

30519269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774490.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 30519269 is about 5524.4247664350. The cubic root of 30519269 is about 312.5057714134.

The spelling of 30519269 in words is "thirty million, five hundred nineteen thousand, two hundred sixty-nine".

Divisors: 1 11 2774479 30519269