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30545386 = 217898537
BaseRepresentation
bin111010010000…
…1010111101010
32010110212101121
41310201113222
530304423021
63010405454
7520426414
oct164412752
963425347
1030545386
1116273223
12a29088a
1364362c1
1440b19b4
152a35741
hex1d215ea

30545386 has 8 divisors (see below), whose sum is σ = 45849060. Its totient is φ = 15262368.

The previous prime is 30545377. The next prime is 30545393. The reversal of 30545386 is 68354503.

It can be written as a sum of positive squares in 2 ways, for example, as 23707161 + 6838225 = 4869^2 + 2615^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691 + ... + 7846.

Almost surely, 230545386 is an apocalyptic number.

30545386 is a deficient number, since it is larger than the sum of its proper divisors (15303674).

30545386 is a wasteful number, since it uses less digits than its factorization.

30545386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 30545386 is about 5526.7880364639. The cubic root of 30545386 is about 312.5948887314.

Adding to 30545386 its reverse (68354503), we get a palindrome (98899889).

The spelling of 30545386 in words is "thirty million, five hundred forty-five thousand, three hundred eighty-six".

Divisors: 1 2 1789 3578 8537 17074 15272693 30545386