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30345190 = 2528110799
BaseRepresentation
bin111001111000…
…0011111100110
32010002200202221
41303300133212
530232021230
63002222554
7515633641
oct163603746
963080687
1030345190
1116146877
12a1b4a5a
136396145
14405ca58
1529e627a
hex1cf07e6

30345190 has 16 divisors (see below), whose sum is σ = 54820800. Its totient is φ = 12093760.

The previous prime is 30345181. The next prime is 30345199. The reversal of 30345190 is 9154303.

It is an interprime number because it is at equal distance from previous prime (30345181) and next prime (30345199).

It is a super-2 number, since 2×303451902 = 1841661112272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30345199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2590 + ... + 8209.

It is an arithmetic number, because the mean of its divisors is an integer number (3426300).

Almost surely, 230345190 is an apocalyptic number.

30345190 is a deficient number, since it is larger than the sum of its proper divisors (24475610).

30345190 is a wasteful number, since it uses less digits than its factorization.

30345190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30345190 is about 5508.6468392882. The cubic root of 30345190 is about 311.9104704216.

Adding to 30345190 its reverse (9154303), we get a palindrome (39499493).

The spelling of 30345190 in words is "thirty million, three hundred forty-five thousand, one hundred ninety".

Divisors: 1 2 5 10 281 562 1405 2810 10799 21598 53995 107990 3034519 6069038 15172595 30345190