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30693512 = 23191131787
BaseRepresentation
bin111010100010…
…1100010001000
32010202101120202
41311011202020
530324143022
63013511332
7521614313
oct165054210
963671522
1030693512
1116364543
12a342548
136488855
14410d97a
152a64592
hex1d45888

30693512 has 32 divisors (see below), whose sum is σ = 61149600. Its totient is φ = 14402304.

The previous prime is 30693479. The next prime is 30693527. The reversal of 30693512 is 21539603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16283 + ... + 18069.

It is an arithmetic number, because the mean of its divisors is an integer number (1910925).

Almost surely, 230693512 is an apocalyptic number.

It is an amenable number.

30693512 is a deficient number, since it is larger than the sum of its proper divisors (30456088).

30693512 is a wasteful number, since it uses less digits than its factorization.

30693512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 30693512 is about 5540.1725604894. The cubic root of 30693512 is about 313.0993706405.

The spelling of 30693512 in words is "thirty million, six hundred ninety-three thousand, five hundred twelve".

Divisors: 1 2 4 8 19 38 76 113 152 226 452 904 1787 2147 3574 4294 7148 8588 14296 17176 33953 67906 135812 201931 271624 403862 807724 1615448 3836689 7673378 15346756 30693512