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30795039 = 3311103687
BaseRepresentation
bin111010101111…
…0010100011111
32010221112212000
41311132110133
530340420124
63020013343
7522516312
oct165362437
963845760
1030795039
1116423850
12a391253
1364c2b22
144138979
152a846c9
hex1d5e51f

30795039 has 16 divisors (see below), whose sum is σ = 49770240. Its totient is φ = 18663480.

The previous prime is 30795019. The next prime is 30795049. The reversal of 30795039 is 93059703.

It is not a de Polignac number, because 30795039 - 28 = 30794783 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30794994 and 30795012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30795019) 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, 51547 + ... + 52140.

It is an arithmetic number, because the mean of its divisors is an integer number (3110640).

Almost surely, 230795039 is an apocalyptic number.

30795039 is a deficient number, since it is larger than the sum of its proper divisors (18975201).

30795039 is a wasteful number, since it uses less digits than its factorization.

30795039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103707 (or 103701 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 36.

The square root of 30795039 is about 5549.3277971300. The cubic root of 30795039 is about 313.4442106719. Note that the first 3 decimals are identical.

It can be divided in two parts, 3079 and 5039, that added together give a palindrome (8118).

The spelling of 30795039 in words is "thirty million, seven hundred ninety-five thousand, thirty-nine".

Divisors: 1 3 9 11 27 33 99 297 103687 311061 933183 1140557 2799549 3421671 10265013 30795039