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30342190 = 253034219
BaseRepresentation
bin111001110111…
…1110000101110
32010002112122211
41303233300232
530231422230
63002201034
7515622124
oct163576056
963075584
1030342190
111614459a
12a1b317a
136394978
14405b914
1529e542a
hex1cefc2e

30342190 has 8 divisors (see below), whose sum is σ = 54615960. Its totient is φ = 12136872.

The previous prime is 30342187. The next prime is 30342197. The reversal of 30342190 is 9124303.

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

It is a super-2 number, since 2×303421902 = 1841296987992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30342197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517100 + ... + 1517119.

It is an arithmetic number, because the mean of its divisors is an integer number (6826995).

Almost surely, 230342190 is an apocalyptic number.

30342190 is a deficient number, since it is larger than the sum of its proper divisors (24273770).

30342190 is a wasteful number, since it uses less digits than its factorization.

30342190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034226.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30342190 is about 5508.3745333810. The cubic root of 30342190 is about 311.9001913379.

Adding to 30342190 its reverse (9124303), we get a palindrome (39466493).

The spelling of 30342190 in words is "thirty million, three hundred forty-two thousand, one hundred ninety".

Divisors: 1 2 5 10 3034219 6068438 15171095 30342190