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98201281 = 149659069
BaseRepresentation
bin1011101101001…
…10111011000001
320211210010211111
411312212323001
5200114420111
613424443321
72301461053
oct566467301
9224703744
1098201281
1150483092
1228a79541
1317463b89
14d0838d3
15894ba21
hex5da6ec1

98201281 has 4 divisors (see below), whose sum is σ = 98860500. Its totient is φ = 97542064.

The previous prime is 98201267. The next prime is 98201287. The reversal of 98201281 is 18210289.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 54760000 = 6591^2 + 7400^2 .

It is a cyclic number.

It is not a de Polignac number, because 98201281 - 25 = 98201249 is a prime.

It is a super-2 number, since 2×982012812 = 19286983180081922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98201287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329386 + ... + 329683.

It is an arithmetic number, because the mean of its divisors is an integer number (24715125).

Almost surely, 298201281 is an apocalyptic number.

It is an amenable number.

98201281 is a deficient number, since it is larger than the sum of its proper divisors (659219).

98201281 is a wasteful number, since it uses less digits than its factorization.

98201281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659218.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 98201281 is about 9909.6559476099. The cubic root of 98201281 is about 461.3590573079.

The spelling of 98201281 in words is "ninety-eight million, two hundred one thousand, two hundred eighty-one".

Divisors: 1 149 659069 98201281