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30795405 = 3510120327
BaseRepresentation
bin111010101111…
…0011010001101
32010221120100120
41311132122031
530340423110
63020015153
7522520344
oct165363215
963846316
1030795405
1116424053
12a3914b9
1364c3044
144138b5b
152a84870
hex1d5e68d

30795405 has 16 divisors (see below), whose sum is σ = 49762944. Its totient is φ = 16260800.

The previous prime is 30795403. The next prime is 30795437. The reversal of 30795405 is 50459703.

It is not a de Polignac number, because 30795405 - 21 = 30795403 is a prime.

It is a super-2 number, since 2×307954052 = 1896713938228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30795403) 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, 8649 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (3110184).

Almost surely, 230795405 is an apocalyptic number.

It is an amenable number.

30795405 is a deficient number, since it is larger than the sum of its proper divisors (18967539).

30795405 is a wasteful number, since it uses less digits than its factorization.

30795405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20436.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 30795405 is about 5549.3607739991. The cubic root of 30795405 is about 313.4454524317.

The spelling of 30795405 in words is "thirty million, seven hundred ninety-five thousand, four hundred five".

Divisors: 1 3 5 15 101 303 505 1515 20327 60981 101635 304905 2053027 6159081 10265135 30795405