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98305681 = 3115121001
BaseRepresentation
bin1011101110000…
…00011010010001
320211222110001011
411313000122101
5200131240211
613431010521
72302404325
oct567003221
9224873034
1098305681
1150544571
1228b09a41
131749c556
14d0ad985
15896c921
hex5dc0691

98305681 has 8 divisors (see below), whose sum is σ = 102153728. Its totient is φ = 94500000.

The previous prime is 98305673. The next prime is 98305699. The reversal of 98305681 is 18650389.

98305681 = T8094 + T8095 + T8096.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 98305681 - 23 = 98305673 is a prime.

It is a super-2 number, since 2×983056812 = 19328013833747522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98305661) 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, 5820 + ... + 15181.

It is an arithmetic number, because the mean of its divisors is an integer number (12769216).

Almost surely, 298305681 is an apocalyptic number.

98305681 is the 8096-th centered triangular number.

It is an amenable number.

98305681 is a deficient number, since it is larger than the sum of its proper divisors (3848047).

98305681 is a wasteful number, since it uses less digits than its factorization.

98305681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21183.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 98305681 is about 9914.9221378688. The cubic root of 98305681 is about 461.5224931491.

The spelling of 98305681 in words is "ninety-eight million, three hundred five thousand, six hundred eighty-one".

Divisors: 1 31 151 4681 21001 651031 3171151 98305681