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30387674 = 2109139393
BaseRepresentation
bin111001111101…
…0110111011010
32010011212001102
41303322313122
530234401144
63003151402
7516201542
oct163726732
963155042
1030387674
1116175789
12a215562
1363ac595
144070322
152a03b4e
hex1cfadda

30387674 has 8 divisors (see below), whose sum is σ = 46000020. Its totient is φ = 15054336.

The previous prime is 30387661. The next prime is 30387689. The reversal of 30387674 is 47678303.

It can be written as a sum of positive squares in 2 ways, for example, as 27300625 + 3087049 = 5225^2 + 1757^2 .

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

It is a super-2 number, since 2×303876742 = 1846821462260552, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69479 + ... + 69914.

Almost surely, 230387674 is an apocalyptic number.

30387674 is a deficient number, since it is larger than the sum of its proper divisors (15612346).

30387674 is a wasteful number, since it uses less digits than its factorization.

30387674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139504.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 30387674 is about 5512.5016099771. The cubic root of 30387674 is about 312.0559632793.

The spelling of 30387674 in words is "thirty million, three hundred eighty-seven thousand, six hundred seventy-four".

Divisors: 1 2 109 218 139393 278786 15193837 30387674