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98042181 = 33131097
BaseRepresentation
bin1011101100000…
…00000101000101
320211111001120220
411312000011011
5200044322211
613421214553
72300226156
oct566000505
9224431526
1098042181
11503845a6
1228a01459
1317409633
14d04192d
158919806
hex5d80145

98042181 has 16 divisors (see below), whose sum is σ = 135203328. Its totient is φ = 63195360.

The previous prime is 98042143. The next prime is 98042183. The reversal of 98042181 is 18124089.

It is not a de Polignac number, because 98042181 - 214 = 98025797 is a prime.

It is a super-2 number, since 2×980421812 = 19224538510473522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98042183) 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, 88825 + ... + 89921.

It is an arithmetic number, because the mean of its divisors is an integer number (8450208).

Almost surely, 298042181 is an apocalyptic number.

It is an amenable number.

98042181 is a deficient number, since it is larger than the sum of its proper divisors (37161147).

98042181 is an equidigital number, since it uses as much as digits as its factorization.

98042181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 98042181 is about 9901.6251696376. The cubic root of 98042181 is about 461.1097669332.

The spelling of 98042181 in words is "ninety-eight million, forty-two thousand, one hundred eighty-one".

Divisors: 1 3 31 93 961 1097 2883 3291 29791 34007 89373 102021 1054217 3162651 32680727 98042181