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30135955 = 56027191
BaseRepresentation
bin111001011110…
…1011010010011
32002201001202111
41302331122103
530203322310
62553530151
7514102633
oct162753223
962631674
1030135955
1116013653
12a113957
136321b35
1440066c3
1529a428a
hex1cbd693

30135955 has 4 divisors (see below), whose sum is σ = 36163152. Its totient is φ = 24108760.

The previous prime is 30135913. The next prime is 30135967. The reversal of 30135955 is 55953103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55953103 = 173291359.

It is not a de Polignac number, because 30135955 - 27 = 30135827 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3013591 + ... + 3013600.

It is an arithmetic number, because the mean of its divisors is an integer number (9040788).

Almost surely, 230135955 is an apocalyptic number.

30135955 is a deficient number, since it is larger than the sum of its proper divisors (6027197).

30135955 is an equidigital number, since it uses as much as digits as its factorization.

30135955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027196.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 30135955 is about 5489.6224824663. The cubic root of 30135955 is about 311.1919253164.

The spelling of 30135955 in words is "thirty million, one hundred thirty-five thousand, nine hundred fifty-five".

Divisors: 1 5 6027191 30135955