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30769012 = 227692253
BaseRepresentation
bin111010101011…
…1111101110100
32010220020011001
41311113331310
530334102022
63015253044
7522350401
oct165277564
963806131
1030769012
111640623a
12a37a184
1364b4021
14412d2a8
152a7bb27
hex1d57f74

30769012 has 6 divisors (see below), whose sum is σ = 53845778. Its totient is φ = 15384504.

The previous prime is 30769007. The next prime is 30769033. The reversal of 30769012 is 21096703.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 364816 = 5514^2 + 604^2 .

It is a super-2 number, since 2×307690122 = 1893464198912288, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3846123 + ... + 3846130.

Almost surely, 230769012 is an apocalyptic number.

It is an amenable number.

30769012 is a deficient number, since it is larger than the sum of its proper divisors (23076766).

30769012 is a wasteful number, since it uses less digits than its factorization.

30769012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692257 (or 7692255 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 30769012 is about 5546.9822426253. The cubic root of 30769012 is about 313.3558813812.

The spelling of 30769012 in words is "thirty million, seven hundred sixty-nine thousand, twelve".

Divisors: 1 2 4 7692253 15384506 30769012