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98138741 = 251390991
BaseRepresentation
bin1011101100101…
…11101001110101
320211122222001012
411312113221311
5200110414431
613423242005
72301110531
oct566275165
9224588035
1098138741
11504400a8
1228a49305
131744157c
14d068bc1
15893822b
hex5d97a75

98138741 has 4 divisors (see below), whose sum is σ = 98529984. Its totient is φ = 97747500.

The previous prime is 98138731. The next prime is 98138749. The reversal of 98138741 is 14783189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14783189 = 56925981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-98138741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98138749) by changing a digit.

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, 195245 + ... + 195746.

It is an arithmetic number, because the mean of its divisors is an integer number (24632496).

Almost surely, 298138741 is an apocalyptic number.

It is an amenable number.

98138741 is a deficient number, since it is larger than the sum of its proper divisors (391243).

98138741 is a wasteful number, since it uses less digits than its factorization.

98138741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391242.

The product of its digits is 48384, while the sum is 41.

The square root of 98138741 is about 9906.4999369101. The cubic root of 98138741 is about 461.2610968656.

The spelling of 98138741 in words is "ninety-eight million, one hundred thirty-eight thousand, seven hundred forty-one".

Divisors: 1 251 390991 98138741