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30369489 = 3371072557
BaseRepresentation
bin111001111011…
…0011011010001
32010010221002220
41303312123101
530233310424
63002531253
7516064533
oct163663321
963127086
1030369489
1116163057
12a206b29
1363a4217
144067853
1529ed579
hex1cf66d1

30369489 has 16 divisors (see below), whose sum is σ = 41992128. Its totient is φ = 19507392.

The previous prime is 30369487. The next prime is 30369503. The reversal of 30369489 is 98496303.

It is not a de Polignac number, because 30369489 - 21 = 30369487 is a prime.

It is a super-2 number, since 2×303694892 = 1844611724242242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30369489.

It is not an unprimeable number, because it can be changed into a prime (30369487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10599 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (2624508).

Almost surely, 230369489 is an apocalyptic number.

It is an amenable number.

30369489 is a deficient number, since it is larger than the sum of its proper divisors (11622639).

30369489 is a wasteful number, since it uses less digits than its factorization.

30369489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 30369489 is about 5510.8519305095. The cubic root of 30369489 is about 311.9937026178.

The spelling of 30369489 in words is "thirty million, three hundred sixty-nine thousand, four hundred eighty-nine".

Divisors: 1 3 37 107 111 321 2557 3959 7671 11877 94609 273599 283827 820797 10123163 30369489