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30775401 = 3243281283
BaseRepresentation
bin111010101100…
…1100001101001
32010220112220200
41311121201221
530334303101
63015342413
7522405126
oct165314151
963815820
1030775401
1116410018
12a381a09
1364b6bc7
14413174d
152a7d986
hex1d59869

30775401 has 24 divisors (see below), whose sum is σ = 45810336. Its totient is φ = 19897920.

The previous prime is 30775397. The next prime is 30775463. The reversal of 30775401 is 10457703.

It is not a de Polignac number, because 30775401 - 22 = 30775397 is a prime.

It is a super-3 number, since 3×307754013 (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30775001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108606 + ... + 108888.

It is an arithmetic number, because the mean of its divisors is an integer number (1908764).

Almost surely, 230775401 is an apocalyptic number.

It is an amenable number.

30775401 is a deficient number, since it is larger than the sum of its proper divisors (15034935).

30775401 is a wasteful number, since it uses less digits than its factorization.

30775401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 30775401 is about 5547.5581114577. The cubic root of 30775401 is about 313.3775687006.

The spelling of 30775401 in words is "thirty million, seven hundred seventy-five thousand, four hundred one".

Divisors: 1 3 9 43 129 281 283 387 843 849 2529 2547 12083 12169 36249 36507 79523 108747 109521 238569 715707 3419489 10258467 30775401