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30125135 = 527721751
BaseRepresentation
bin111001011101…
…0110001001111
32002200111220202
41302322301033
530203001020
62553404115
7514026245
oct162726117
962614822
1030125135
1116006507
12a10963b
136319c31
144002795
1529a0e75
hex1cbac4f

30125135 has 8 divisors (see below), whose sum is σ = 36282336. Its totient is φ = 24012000.

The previous prime is 30125111. The next prime is 30125191. The reversal of 30125135 is 53152103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30125135 - 216 = 30059599 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 9491 + ... + 12260.

It is an arithmetic number, because the mean of its divisors is an integer number (4535292).

Almost surely, 230125135 is an apocalyptic number.

30125135 is a deficient number, since it is larger than the sum of its proper divisors (6157201).

30125135 is a wasteful number, since it uses less digits than its factorization.

30125135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22033.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 30125135 is about 5488.6368981743. The cubic root of 30125135 is about 311.1546774543.

Adding to 30125135 its reverse (53152103), we get a palindrome (83277238).

The spelling of 30125135 in words is "thirty million, one hundred twenty-five thousand, one hundred thirty-five".

Divisors: 1 5 277 1385 21751 108755 6025027 30125135