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30102569 = 741531979
BaseRepresentation
bin111001011010…
…1010000101001
32002122100221222
41302311100221
530201240234
62553111425
7513603410
oct162652051
962570858
1030102569
1115aa0562
12a0b8575
13630c893
143dd8477
15299942e
hex1cb5429

30102569 has 16 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 24685440.

The previous prime is 30102521. The next prime is 30102577. The reversal of 30102569 is 96520103.

It is a cyclic number.

It is not a de Polignac number, because 30102569 - 212 = 30098473 is a prime.

It is a super-2 number, since 2×301025692 = 1812329320799522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30102169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14222 + ... + 16200.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 230102569 is an apocalyptic number.

It is an amenable number.

30102569 is a deficient number, since it is larger than the sum of its proper divisors (5822551).

30102569 is a wasteful number, since it uses less digits than its factorization.

30102569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30102569 is about 5486.5808113979. The cubic root of 30102569 is about 311.0769652670.

The spelling of 30102569 in words is "thirty million, one hundred two thousand, five hundred sixty-nine".

Divisors: 1 7 41 53 287 371 1979 2173 13853 15211 81139 104887 567973 734209 4300367 30102569