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30430479 = 3471072017
BaseRepresentation
bin111010000010…
…1010100001111
32010021000202210
41310011110033
530242233404
63004121503
7516440412
oct164052417
963230683
1030430479
11161a4962
12a236293
1363c5c01
144081b79
152a11689
hex1d0550f

30430479 has 16 divisors (see below), whose sum is σ = 41845248. Its totient is φ = 19660032.

The previous prime is 30430451. The next prime is 30430481. The reversal of 30430479 is 97403403.

It is not a de Polignac number, because 30430479 - 28 = 30430223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30430409) 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, 14079 + ... + 16095.

It is an arithmetic number, because the mean of its divisors is an integer number (2615328).

Almost surely, 230430479 is an apocalyptic number.

30430479 is a deficient number, since it is larger than the sum of its proper divisors (11414769).

30430479 is a wasteful number, since it uses less digits than its factorization.

30430479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30430479 is about 5516.3827822224. The cubic root of 30430479 is about 312.2024183678.

The spelling of 30430479 in words is "thirty million, four hundred thirty thousand, four hundred seventy-nine".

Divisors: 1 3 47 107 141 321 2017 5029 6051 15087 94799 215819 284397 647457 10143493 30430479